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Introduction
Sony WH-1000XM4 is a popular model of headphones known for its active noise control technology, which allows users to enjoy audio content without having to raise the volume excessively. These noise-cancelling headphones are particularly effective in environments such as aviation, where they significantly increase the signal-to-noise ratio, making it easier to hear important information like safety announcements. The headphones utilize active noise control (ANC) by capturing ambient sounds through a microphone and generating sound waves that are exactly out of phase with the undesired sounds, resulting in their cancellation through destructive interference.
Improvements and Features
Sony WH-1000XM4 is the successor to the highly acclaimed WH-1000XM3 model. While the external design remains largely unchanged, Sony has focused on improving comfort and fine-tuning the noise cancellation technology. The headphones now provide a more even and comfortable fit, distributing the pressure around the ears more effectively. Despite the addition of new sensors and larger ear cushions, the weight of the headphones has been slightly reduced, further enhancing the overall comfort.
One of the significant improvements in the WH-1000XM4 is the enhanced noise cancellation, particularly in the mid-range and higher frequencies. Sony has incorporated a new Bluetooth chip (system-on-a-chip or SOC) that continuously analyzes the surroundings inside and outside the headphones and adjusts thousands of times per second. While the improvements may not be immediately noticeable without a direct comparison to the previous model, the WH-1000XM4 outperforms its predecessor in certain areas.
Noise Cancellation Performance
The WH-1000XM4 excels in noise cancellation and maintains Sony's reputation as a leader in this field. The ANC technology effectively reduces external noise, allowing users to immerse themselves in their music or audio content. Even in environments with high levels of noise, such as during flights or in crowded areas, the headphones provide exceptional noise reduction, creating a peaceful listening experience.
During our testing, we compared the WH-1000XM4 with the previous model on a rare overseas trip. The improvements in noise cancellation were subtle but noticeable, providing a slightly better experience. The ANC performance was particularly impressive on flights, where the headphones effectively suppressed cabin noise and allowed us to enjoy our music at moderate volume levels.
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Audio Quality and Features
While the WH-1000XM4 is primarily known for its noise cancellation capabilities, it also delivers excellent audio quality. The headphones produce a balanced sound profile with a noticeable improvement in the high-frequency range compared to previous generations. The addition of features like DSEE Extreme, a 5-band graphic equalizer, and optimization options for different ear shapes further enhance the audio experience.
Sony's app provides additional customization options, allowing users to choose between stable connection (SBC) or prioritize audio quality. Android users can benefit from using the LDAC codec for the best Bluetooth audio quality, while iPhone users can still enjoy improved sound with AAC. The app also offers features like adaptive sound control, which adjusts noise cancellation and ambient sound based on user behavior and surroundings.
Conclusion
The Sony WH-1000XM4 sets a new standard for noise-cancelling headphones. While the improvements from its predecessor may not be drastic, the WH-1000XM4 excels in comfort, noise cancellation, and audio quality. With its advanced ANC technology and customizable features, these headphones provide an immersive and enjoyable listening experience.
Whether you are a frequent traveler, a music enthusiast, or someone who values peace and quiet, the Sony WH-1000XM4 is a top choice. Its industry-leading noise cancellation capabilities, combined with its impressive audio performance, make it a true powerhouse in the world of headphones.
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Sony WH-1000XM4 is a popular model of headphones known for its active noise control technology, which allows users to enjoy audio content without having to raise the volume excessively. These noise-cancelling headphones are particularly effective in environments such as aviation, where they significantly increase the signal-to-noise ratio, making it easier to hear important information like safety announcements. The headphones utilize active noise control (ANC) by capturing ambient sounds through a microphone and generating sound waves that are exactly out of phase with the undesired sounds, resulting in their cancellation through destructive interference.
While noise cancellation is effective against constant droning sounds like road noise, it is less effective on short/sharp sounds like voices or breaking glass. To maximize sound reduction across the frequency spectrum, noise-cancelling headphones often combine sound isolation with ANC. Additionally, noise cancellation can be used without sound isolation to make desired sounds, such as voices, easier to hear. It is important to note that noise-cancelling headphones depend on sound isolation or soundproofing to prevent higher-frequency noise from reaching the ears, as cancelling such sound closer to the eardrum is currently technically challenging.
In the aviation industry, active noise cancellation was originally developed to reduce noise for pilots and improve their communication and hearing protection. The first commercially available active noise-cancelling headset was introduced by Bose Corporation in 1989. Today, noise-cancelling headphones are provided in business and first-class cabins by several airlines, with Bose being a prominent supplier.
These headphones have also found application as sleeping aids, helping individuals with insomnia or other sleeping disorders by reducing ambient sounds that may affect their ability to sleep. In the hospital setting, noise-cancelling headphones have been implemented in intensive care units to minimize noise exposure for patients and potentially mitigate sleep disturbances, delirium, and morbidity.
While noise-cancelling headphones offer numerous benefits, there are some drawbacks to consider. The active noise control technology requires power, typically supplied by a USB port or battery, which adds weight and increases the size of the headphones. The circuitry involved in noise cancellation may also introduce high-frequency hiss and potentially affect audio quality. However, overall, the noise-cancelling technology in the Sony WH-1000XM4 headphones is highly regarded and appreciated by both music enthusiasts and everyday users.
