Best baby sound machines

? Introduction

Welcome to our comprehensive baby sound machines buying guide! When it comes to ensuring a peaceful and restful sleep for your little one, sound machines are a game-changer. But with so many options available in the market, choosing the right one can be overwhelming. Fret not, as we are here to help you make an informed decision. In this guide, we will explore the various features, benefits, and considerations to keep in mind while purchasing a baby sound machine. From soothing lullabies to white noise options, we will cover it all to ensure your baby gets the sleep they deserve. So, let’s dive in and find the perfect sound machine to create a serene sleeping environment for your bundle of joy.

? Our Top 5

SaleNo. 1
Dreamegg White Noise Machine - Portable Sound Machine for Baby Adult, Features Powerful Battery, 21 Soothing Sound, Noise Canceling for Office & Sleeping, Sound Therapy for Home, Travel, Registry Gift
  • 【COMPACT BUT POWERFUL】- D11 Max has more skills. Designed for all things sleep, this sound machine comes with favorable features: rechargeable battery, 21 soothing sounds, customized timers, various volume levels, child-lock for safety, and even memory functions! It is not only a sleep soother sound machine for baby kids, but also an effective white noise machine for adults sleeping & relaxation.
  • 【HUGE BATTERY, WORRY-FREE ON THE GO】- Everything D11 max has, PLUS a LONG-LASTING battery. The portable sound machine is built with unbeatable1800mAh battery compared with 500mAh of others. Easily lasts through the night and into daytime naps on a single charge. For parents who are worried about baby getting naps on the go and especially when the power goes out, it is definitely a life saver! Battery is built in (comes with a USB-C cord to charge) so no need to worry about buying any.
  • 【HELPS SETTLE-IN & STAY ASLEEP】- Moms know how precious sleep can be. Turn it on to create peaceful sleep environment to help crying baby calm down and stay asleep. Choose from selected 21 soothing sounds including classic white noise sounds, to baby lullabies and nature sounds. Fall asleep easier and stay asleep longer with this baby sound machine.
  • 【ULTRA PORTABLE AND CORDLESS】 - D11 Max make magic happen for better sleep anywhere. Small and lightweight makes it a perfect travel noise machine. It is extremely convenient when you are packing around so much stuff whether for a baby or for your travel. With a lanyard and loop, you can easily hang it on the stroller or car seat or suitcase. Take it along in the car, on walks, hotel stays, business trips to enjoy portable freedom.
  • 【HAPPY EXPERIENCE, CUSTOMERS TURN BACK】- Dreamegg has been the standard in white noise sound machine. Neutral look makes it fit into any room décor and works with aesthetic very well. D11 Max is the fancy gift choice with unbeatable quality for babies and also for adults who struggles to switch off or wind down after a long hard day. 365 days warranty saves you worry and friendly customer support brings your smile back on face.
SaleNo. 2
Hatch Rest Baby Sound Machine, Night Light | 2nd Gen | Sleep Trainer, Time-to-Rise Alarm Clock, White Noise Soother, Music & Stories for Nursery, Toddler & Kids Bedroom (Wi-Fi)
  • 𝗢𝘂𝗿 𝗹𝗮𝘁𝗲𝘀𝘁, 𝘂𝗽𝗱𝗮𝘁𝗲𝗱 𝗥𝗲𝘀𝘁 𝟮𝗻𝗱 𝗴𝗲𝗻 𝗌𝗈𝗎𝗇𝖽 𝗆𝖺𝖼𝗁𝗂𝗇𝖾 𝗂𝗌 𝗇𝗈𝗐 𝖶𝗂-𝖥𝗂 𝖾𝗇𝖺𝖻𝗅𝖾𝖽, 𝗐𝗂𝗍𝗁 𝖽𝗂𝗆𝗆𝖺𝖻𝗅𝖾 𝖼𝗅𝗈𝖼𝗄 𝖺𝗇𝖽 𝖾𝗏𝖾𝗇 𝗆𝗈𝗋𝖾 𝖿𝖾𝖺𝗍𝗎𝗋𝖾𝗌 𝖿𝗈𝗋 𝖽𝗋𝖾𝖺𝗆𝗒 𝗌𝗅𝖾𝖾𝗉!
  • 𝗦𝗼𝘂𝗻𝗱 𝗠𝗮𝗰𝗵𝗶𝗻𝗲. 𝖸𝗈𝗎𝗋 𝖱𝖾𝗌𝗍 𝟤𝗇𝖽 𝗀𝖾𝗇 𝖼𝗈𝗆𝖾𝗌 𝖿𝗎𝗅𝗅𝗒 𝗅𝗈𝖺𝖽𝖾𝖽 𝗐𝗂𝗍𝗁 𝖾𝗑𝗉𝖾𝗋𝗍 𝖼𝗎𝗋𝖺𝗍𝖾𝖽 𝗌𝗅𝖾𝖾𝗉 𝗌𝗈𝗎𝗇𝖽𝗌 𝗅𝗂𝗄𝖾 𝗐𝗁𝗂𝗍𝖾 𝗇𝗈𝗂𝗌𝖾, 𝗈𝖼𝖾𝖺𝗇, 𝗐𝗂𝗇𝖽, 𝖿𝖺𝗇, 𝗁𝖾𝖺𝗋𝗍𝖻𝖾𝖺𝗍, 𝗋𝖺𝗂𝗇, 𝗅𝗎𝗅𝗅𝖺𝖻𝗂𝖾𝗌 𝖺𝗇𝖽 𝗆𝗈𝗋𝖾 𝗍𝗈 𝗄𝖾𝖾𝗉 𝗒𝗈𝗎𝗋 𝗅𝗂𝗍𝗍𝗅𝖾 𝗈𝗇𝖾 𝖽𝗋𝖾𝖺𝗆𝗂𝗇𝗀 𝗍𝗁𝗋𝗈𝗎𝗀𝗁 𝗍𝗁𝖾 𝗇𝗂𝗀𝗁𝗍.
  • 𝗘𝘅𝗽𝗮𝗻𝗱 𝘆𝗼𝘂𝗿 𝗹𝗶𝗯𝗿𝗮𝗿𝘆 𝘄𝗶𝘁𝗵 𝗛𝗮𝘁𝗰𝗵+. 𝖳𝗈 𝖺𝖼𝖼𝖾𝗌𝗌 𝖾𝗏𝖾𝗇 𝗆𝗈𝗋𝖾 𝖼𝗈𝗇𝗍𝖾𝗇𝗍, 𝗂𝗇𝖼𝗅𝗎𝖽𝗂𝗇𝗀 𝗌𝗅𝖾𝖾𝗉 𝗌𝗍𝗈𝗋𝗂𝖾𝗌, 𝗆𝗈𝖽𝖾𝗋𝗇 𝗅𝗎𝗅𝗅𝖺𝖻𝗂𝖾𝗌, 𝗆𝗂𝗇𝗂 𝗆𝗂𝗇𝖽𝖿𝗎𝗅𝗇𝖾𝗌𝗌 𝗆𝗈𝗆𝖾𝗇𝗍𝗌 𝖺𝗇𝖽 𝗆𝗈𝗋𝖾, 𝗀𝗂𝗏𝖾 𝖧𝖺𝗍𝖼𝗁+ 𝖬𝖾𝗆𝖻𝖾𝗋𝗌𝗁𝗂𝗉 𝖺 𝗍𝗋𝗒! 𝖲𝗎𝖻𝗌𝖼𝗋𝗂𝗉𝗍𝗂𝗈𝗇 𝗌𝗈𝗅𝖽 𝗌𝖾𝗉𝖺𝗋𝖺𝗍𝖾𝗅𝗒 𝗂𝗇 𝖺𝗉𝗉; 𝖿𝗋𝖾𝖾 𝗍𝗋𝗂𝖺𝗅 𝗂𝗇𝖼𝗅𝗎𝖽𝖾𝖽.
  • 𝗦𝗺𝗮𝗿𝘁 𝗡𝗶𝗴𝗵𝘁 𝗟𝗶𝗴𝗵𝘁. 𝖥𝗎𝗇, 𝖻𝖾𝖽𝗌𝗂𝖽𝖾 𝗅𝖺𝗆𝗉 𝗐𝗂𝗍𝗁 𝗂𝗇𝖿𝗂𝗇𝗂𝗍𝖾 𝖼𝗎𝗌𝗍𝗈𝗆 𝖼𝗈𝗅𝗈𝗋 𝗁𝗎𝖾𝗌. 𝖯𝖾𝗋𝖿𝖾𝖼𝗍 𝖿𝗈𝗋 𝖻𝗈𝗒𝗌 𝗈𝗋 𝗀𝗂𝗋𝗅𝗌. 𝖨𝗅𝗅𝗎𝗆𝗂𝗇𝖺𝗍𝖾 𝗍𝗁𝖾 𝖼𝗋𝗂𝖻 𝖺𝗇𝖽 𝖼𝗁𝖺𝗇𝗀𝗂𝗇𝗀 𝗍𝖺𝖻𝗅𝖾 𝗍𝗈 𝖾𝖺𝗌𝖾 𝗇𝗂𝗀𝗁𝗍𝗍𝗂𝗆𝖾 𝗂𝗇𝖿𝖺𝗇𝗍 𝖿𝖾𝖾𝖽𝗂𝗇𝗀𝗌. 𝖬𝖺𝗄𝖾 𝗍𝗁𝖾 𝖽𝖺𝗋𝗄 𝗅𝖾𝗌𝗌 𝗌𝖼𝖺𝗋𝗒 𝗂𝗇 𝗒𝗈𝗎𝗋 𝖼𝗁𝗂𝗅𝖽’𝗌 𝗋𝗈𝗈𝗆 𝗐𝗂𝗍𝗁 𝖺 𝖼𝖺𝗅𝗆𝗂𝗇𝗀 𝗀𝗅𝗈𝗐.
  • 𝗧𝗶𝗺𝗲-𝘁𝗼-𝗥𝗶𝘀𝗲 & 𝗧𝗶𝗺𝗲-𝗳𝗼𝗿-𝗕𝗲𝗱. 𝖯𝗋𝗈𝗀𝗋𝖺𝗆 𝖼𝗈𝗅𝗈𝗋 𝖺𝗇𝖽 𝗌𝗈𝗎𝗇𝖽 𝗍𝗈 𝗅𝖾𝗍 𝗒𝗈𝗎𝗋 𝖾𝖺𝗋𝗅𝗒 𝗋𝗂𝗌𝖾𝗋 𝗄𝗇𝗈𝗐 𝗐𝗁𝖾𝗇 𝗍𝗈 𝗌𝗍𝖺𝗒 𝗂𝗇 𝖻𝖾𝖽 𝖺𝗇𝖽 𝗐𝗁𝖾𝗇 𝗂𝗍’𝗌 𝗈𝗄 𝗍𝗈 𝗐𝖺𝗄𝖾 𝗎𝗉. 𝖡𝗎𝗂𝗅𝖽 𝖺 𝗋𝗈𝗎𝗍𝗂𝗇𝖾 𝗍𝗈 𝗍𝗋𝖺𝗂𝗇 𝗒𝗈𝗎𝗋 𝗅𝗂𝗍𝗍𝗅𝖾 𝗈𝗇𝖾 𝗍𝗈 𝗐𝗂𝗇𝖽 𝖽𝗈𝗐𝗇 𝖿𝗈𝗋 𝗇𝖺𝗉𝗌 𝖺𝗇𝖽 𝖻𝖾𝖽𝗍𝗂𝗆𝖾.
No. 3
Baby Sound Machine, Momcozy White Noise Machine for Baby Sleeping with Night Light, Toddler Sleep Trainer with 34 Soothing Sounds, Timer, App Remote Control, Personal Sleep Routine (Blue)
  • 【Multiple Soothing Sounds】34 high-fidelity sounds (11 white noises, 3 fan sounds,8 lullabies and 12 nature sounds) ,40~110dB, let you choose the ideal background to mask intruding noises and create the perfect environment for work, study, sleep or an upset baby.
  • 【Night Light】An adjustable, soft LED luminous lamp provides sufficient, but not too harsh, light for your bedroom at midnight. There are also 7 color light offerings, Baby sound machine is perfect as a nightstand lamp, baby nursery light, relaxing lamp, romantic atmosphere light etc.
  • 【Convenient to use】Smart light can be adjusted remotely via phone, can be tapped on manually as needed or soft-touch. Control remotely via the free companion app. Device requires Wi-Fi.(Please be aware to use a 2.4G network, 5G wifi is not compatible.)Please note:needs to be plugged in for use.
  • 【Sleep Better】With sound machine, enjoy soothing content to help you wind down and prepare your mind & body for sleep. Personalize a sleep-wake routine to help you fall asleep, stay asleep & wake up refreshed.
  • 【Custom settings】The white noise machine can customize color, brightness, sound, and volume level. Set programs to turn off and on automatically based on your family’s sleep schedule.
SaleNo. 4
Yogasleep Hushh Portable White Noise Sound Machine For Baby, 3 Soothing Natural Sounds With Volume Control, Compact Size, Noise Canceling For Sleep Aid, Office Privacy, & Meditation, Registry Gift
  • EFFECTIVELY MASKS NOISE: Beloved by generations since 1962, Yogasleep is the trusted leader in white noise machines. Our signature sound, reminiscent of a gentle breeze, has helped millions experience better sleep. The Hushh effectively blocks out disruptive noises, making it easier for baby to sleep undisturbed wherever you are.
  • SOOTHING SOUNDS & NIGHT LIGHT: Take control of your sound environment and choose from three calming sounds: bright white noise, deep white noise, or gentle surf, and adjust the volume to create the perfect sleep environment for baby. The Hushh's gentle amber LED night light emits just enough of a glow to comfort and guide you in the night without disturbing baby's slumber.
  • COMPACT & PORTABLE: Designed for life on the go, the Hushh is the perfect travel companion for any family. At just 3.5" in diameter and 3.8 ounces, this travel sound machine fits perfectly in any diaper bag or backpack and comes with a flexible baby-safe clip for easy fastening to a stroller, car seat, or crib.
  • USB-RECHARGEABLE: Forget batteries and electrical outlets—Hushh can operate 6+ hours on a single charge, and comes with a convenient USB cable for recharging. Please note: This sound machine is intended for portable use and must be turned off and unplugged every 14 days. If not turned off and unplugged, the unit may freeze or experience impacts to performance.
  • SIMPLE TO USE & CHILD SAFE: With its one-handed operation and intuitive interface, the Hushh is a breeze to use, even when your hands are full. The child safety lock feature ensures settings remain unchanged by curious little fingers, providing consistent comfort for your baby without any interruptions. To clean, simply spot clean or wipe down your unit.
No. 5
BrownNoise Sound Machine with 30 Soothing Sounds 12 Colors Night Light White Noise Machine for Adults Baby Kids Sleep Machines Memory Function 36 Volume Levels 5 Timers for Home Office Travel
3,170 Reviews
BrownNoise Sound Machine with 30 Soothing Sounds 12 Colors Night Light White Noise Machine for Adults Baby Kids Sleep Machines Memory Function 36 Volume Levels 5 Timers for Home Office Travel
  • ❤[30 Natural and Soothing Sounds] Our white noise machine provides 30 soothing sounds, including 3 Brown noise, 2 White noise(White noise, Pink noise), 2 fan noises( Loud and Soft Fan), 10 lullabies and 15 natural sounds( Rain, Sea waves, Brook, Bird, Train, etc.). This sound machine suitable for relieve stress, relax your mind and create a relaxing sleep environment.
  • ❤[12 Night Light Colors] Sound machine with 12 kinds of light color, to suit your personal preferences at any time. You can choose the suitable nightlight to decorate the environment and create the perfect atmosphere for sleep and rest.
  • ❤[10 Adjustable Levels Night Light] An adjustable soft lighting creates a comfortable sleeping atmosphere for baby kids and adults. Change your surroundings to create the perfect atmosphere for baby sleep, it is the best choice for night feedings.
  • ❤[5 Timer Settings & Memory Function] This sound healing machine can be played continuously or 1,2,3, 4 hours auto-off timer, it is good for taking naps, relaxation, meditation, concentration while studying and working. The white noise machine is powered by AC. Our white noise machine can remember the last sound and volume level you selected when restarted, no need to reset to your previous settings.
  • ❤[Easy to Use & Compact Design] Tap the power button to turn/off the sound playing. Tap the night light button to turn on /off the nightlight. With the lightweight and compact design, it is perfect for home, office or travel.

? How to choose?

1. Features to Consider

When choosing a baby sound machine, it’s important to consider the features that will best suit your needs. One important feature to look for is a variety of sound options. Babies can be soothed by different sounds, such as white noise, lullabies, or even the sound of a heartbeat. Having a machine that offers a range of sound options allows you to find the one that works best for your baby’s sleep routine. Additionally, look for a machine that has adjustable volume control, so you can find the perfect level of sound that will not disturb your baby’s sleep.

2. Portability and Size

Another important factor to consider is the portability and size of the baby sound machine. If you plan on using the machine primarily at home, a larger size may not be an issue. However, if you plan on using it while traveling or on-the-go, a compact and lightweight machine would be more convenient. Look for a machine that is easy to pack and carry, so you can provide a consistent sleep environment for your baby no matter where you are.

3. Safety Considerations

Safety should always be a top priority when choosing a baby sound machine. Look for a machine that is made from non-toxic materials and is certified by safety standards. Additionally, consider whether the machine has any small parts that could pose a choking hazard. It’s also important to ensure that the machine does not get too hot during use, as this could be a safety risk. Always read the manufacturer’s guidelines and safety instructions before using the machine.

4. Ease of Use

A baby sound machine should be easy to use, especially during those late-night wake-ups or naptime struggles. Look for a machine with simple controls and intuitive design. Consider whether the machine has a timer function, so you can set it to turn off after a certain period of time. This can be especially useful if you want to avoid having the machine run all night long. Some machines also come with a remote control, which can be convenient for adjusting the sound or volume without disturbing your baby.

5. Price and Warranty

Finally, consider your budget when choosing a baby sound machine. Prices can vary widely, depending on the brand and features. While it’s important to find a machine that fits within your budget, it’s also worth considering the long-term value. Look for a machine that offers a warranty, as this can provide peace of mind in case of any defects or issues. Remember, investing in a high-quality machine that meets your needs can contribute to better sleep for both you and your baby.

When choosing a baby sound machine, it’s important to prioritize features that will provide a soothing and safe sleep environment for your little one. By considering factors such as sound options, portability, safety, ease of use, and price, you can make an informed decision that will help your baby sleep soundly.

? What to Look for in a baby sound machines?

1. Sound Options

When choosing a baby sound machine, it’s important to consider the different sound options available. Look for a machine that offers a variety of soothing sounds that can help calm and relax your baby. Some popular sound options include white noise, lullabies, heartbeat sounds, and nature sounds such as ocean waves or rainforest sounds.

Having a range of sound options is beneficial because different babies respond differently to various sounds. For example, some babies may find white noise soothing, while others may prefer the gentle melodies of lullabies. By having multiple sound options, you can experiment and find the one that works best for your little one.

2. Volume Control

Another important feature to consider is the volume control of the baby sound machine. Babies have sensitive hearing, so it’s crucial to choose a machine that allows you to adjust the volume to a level that is safe and comfortable for your baby.

Having control over the volume is also useful because you can adjust it based on the environment. For example, if you’re using the sound machine in a quiet nursery, you may want a lower volume. However, if you’re using it in a noisy environment, such as a busy living room, you may need to increase the volume to ensure your baby can still hear the soothing sounds.

3. Timer Function

A timer function is a convenient feature that allows you to set a specific duration for the sound machine to play. This can be especially helpful if you want to establish a bedtime routine for your baby. By setting a timer, you can ensure that the sound machine turns off after a certain period of time, helping your baby learn to fall asleep without relying on the constant presence of sound.

The timer function is also beneficial for conserving battery life if your sound machine is portable. Instead of letting it play all night, you can set it to turn off after a few hours, saving battery power for future use.

In conclusion, when searching for a baby sound machine, consider the sound options, volume control, and timer function. Having a variety of sound options ensures that you can find the one that works best for your baby, while volume control allows you to adjust the sound to a safe and comfortable level. Additionally, a timer function can help establish a bedtime routine and conserve battery life. By carefully considering these factors, you can find a baby sound machine that will provide a soothing and calming environment for your little one.

? How we picked?

1. Researching the Best Baby Sound Machines

When it comes to choosing the best baby sound machine, we understand that parents want a product that is not only effective but also safe and reliable for their little ones. That’s why we conducted extensive research to find the top options on the market.

We started by analyzing customer reviews and ratings on various online platforms, such as Amazon and parenting forums. This gave us valuable insights into the experiences of real parents who have used these sound machines with their babies. We paid close attention to feedback regarding the effectiveness of the sound options, ease of use, durability, and overall satisfaction.

Additionally, we consulted with pediatricians and sleep experts to understand the importance of using sound machines for babies. These professionals provided us with valuable information on the benefits of white noise and other soothing sounds for infants’ sleep and relaxation. Their expertise helped us narrow down our selection to sound machines that meet the highest safety standards.

2. Evaluating Features and Functionality

After gathering comprehensive data on the top baby sound machines, we evaluated each product based on its features and functionality. We considered factors such as sound quality, volume control, timer settings, portability, and additional features like nightlights and lullabies.

One key feature we focused on was the variety of sound options available. We believe that having a wide range of sounds to choose from allows parents to find the perfect match for their baby’s preferences. Whether it’s a gentle lullaby, soothing ocean waves, or a heartbeat sound, we ensured that the sound machines on our list offered a diverse selection.

Another important aspect we considered was ease of use. As parents ourselves, we understand the value of simplicity when it comes to baby products. We looked for sound machines that are intuitive to operate, with clear buttons and controls that can be easily adjusted even in the dark.

3. Considering Safety and Durability

The safety and durability of baby products are paramount. We made sure to select sound machines that are made from high-quality materials, free from any harmful substances such as BPA or phthalates. Additionally, we checked for certifications and compliance with safety standards, such as those set by the Consumer Product Safety Commission (CPSC).

Furthermore, we took into account the durability of each sound machine. Babies can be quite curious and may want to explore their surroundings, so we wanted to ensure that the sound machines we recommend are sturdy enough to withstand some accidental drops or bumps.

By conducting thorough research, evaluating features and functionality, and considering safety and durability, we have handpicked a selection of the best baby sound machines on the market. We are confident that these products will provide parents with peace of mind and help create a soothing environment for their little ones’ sleep and relaxation.

? Frequently asked questions about baby sound machines

1. How do baby sound machines work?

Baby sound machines work by playing a variety of soothing sounds and melodies that mimic sounds babies are familiar with in the womb. These sounds can include white noise, heartbeat sounds, lullabies, and nature sounds like ocean waves or rain. The purpose of these machines is to create a calming and comforting environment for babies, helping them relax and fall asleep more easily.

2. Can baby sound machines help my baby sleep better?

Yes, baby sound machines can be a helpful tool in promoting better sleep for your little one. The soothing sounds emitted by these machines can drown out background noise and create a consistent and peaceful sleep environment. Research has shown that white noise, in particular, can help babies fall asleep faster and stay asleep longer. It can also be beneficial for masking sudden noises that may startle your baby during sleep.

3. Are baby sound machines safe for my baby?

Yes, baby sound machines are generally considered safe for use with infants. However, it is important to choose a machine that meets safety standards and is designed specifically for babies. Look for machines that are certified by safety organizations such as the Juvenile Products Manufacturers Association (JPMA) and follow the manufacturer’s guidelines for safe usage. It is also important to place the machine at a safe distance from your baby’s crib and ensure cords are kept out of reach.

4. Can baby sound machines become a sleep crutch?

While baby sound machines can be a helpful sleep aid, it is important to use them in moderation. Relying too heavily on a sound machine may create a dependency, making it difficult for your baby to fall asleep without it. It is recommended to gradually reduce the use of the sound machine as your baby grows older and becomes more accustomed to sleeping without it. Remember, the ultimate goal is for your baby to develop self-soothing skills and be able to sleep soundly without external assistance.

5. What features should I look for in a baby sound machine?

When choosing a baby sound machine, consider features such as adjustable volume, a variety of sound options, a timer function, and portability. Adjustable volume allows you to customize the sound level to suit your baby’s preferences. A wide range of sound options ensures you can find the perfect sound that your baby finds most soothing. A timer function allows you to set the machine to turn off after a certain period, conserving energy and preventing your baby from becoming reliant on continuous sound. Lastly, portability is important if you plan to use the sound machine on-the-go or in different rooms of your home.

Remember, finding the right baby sound machine for your little one may require some trial and error. Pay attention to your baby’s reactions and preferences, and adjust accordingly. With the right sound machine, you can create a peaceful and soothing sleep environment that helps your baby sleep soundly throughout the night.

Last update on 2024-04-18 / Affiliate links / Images from Amazon Product Advertising API

Sources :

Find the best baby sound machines - We Kompare For You : baby sound machines - Essential guide of baby sound machines