Has Active Noise Cancellation (Noise Control)
Sony WF 1000XM4
✓
Bowers & Wilkins PI7 ✓
Active noise cancellation makes use of advanced technology to reduce ambient sounds. How it works, it studies the sound pattern of incoming noise and then generates a mirror signal to cancel it out. In simple terms, it's like taking +1 (sound from your surrounding) and producing -1 (inverted noise) to make 0 resulting in a reduced level of noise.
Bowers & Wilkins PI7 have ANC allowing you to listen at lower volume levels, good for your ears since you don't need to crank up the earbuds volume to outcompete background noise.
The Sony WF 1000XM4 too have Active Noise Cancellation making both earbuds ideal for flights and rush hour travels. The Bowers & Wilkins PI7 and Sony WF 1000XM4 work with different noise cancellation settings, pick the mode that suits your travel or that suites your relaxation time.
Has Passive Noise Reduction
Sony WF 1000XM4
✓
Bowers & Wilkins PI7 ✓
Bowers & Wilkins PI7 sit well in place, creating an acoustic seal that reduces background noise well as preventing the device voice audio from leaking out at the same.
Both of these devices have passive noise reduction this means that both reduce ambient noise instead of actively using technology to cancel it out.
Driver Unit Size
Sony WF 1000XM4
6mm
Bowers & Wilkins PI7 9.2mm
The Bowers & Wilkins PI7 driver unit is 9.2mm in diameter, bigger drivers are more powerful, therefor producing better bass.
The driver unit is the component that produces sound in the earbuds, its size corellates with the loudness of the device.
Sony WF 1000XM4 driver unit is 6mm in diameter,
which implies that they have a smaller driver unit than that of Bowers & Wilkins PI7 by 3.2mm
, as many tend to believe that driver units of a bigger size automatically produce better sound quality.
However, large drivers usually have difficulty producing high frequencies so yeah, larger drivers can generate louder sound, but this does not mean that they produce better quality sound.
Lowest Frequency
Sony WF 1000XM4
20Hz
Bowers & Wilkins PI7 10Hz
The Bowers & Wilkins PI7's lowest frequency is at 10Hz, low-frequency response inidcates how well a particular audio component produces low recognizable frequencies and if it alters the signal while at it.
Sony WF 1000XM4's lowest frequency is at 20Hz, this implies that
Bowers & Wilkins PI7 produce a juicier bass than the Sony WF 1000XM4
Highest Frequency
Sony WF 1000XM4
40000Hz
Bowers & Wilkins PI7 20000Hz
The Bowers & Wilkins PI7's highest frequency is at 20000Hz, high-frequency response indicates how well a particular audio component generates high audible frequencies and if it adjustments to the signal while at it.
Sony WF 1000XM4's highest frequency is at 40000Hz, this implies that
Sony WF 1000XM4 can generate a clearer and crispier treble than the Bowers & Wilkins PI7
Has A Neodymium Magnet
Sony WF 1000XM4
✓
Bowers & Wilkins PI7 ✗
The Sony WF 1000XM4 have neodymium magnets, if used in earbuds produce a higher sensitivity and substantial sound output while using less power. They can help generate music at quite a high sound pressure level, with the use of high magnetic flux.
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