Has Active Noise Cancellation (Noise Control)
Sony WF 1000XM4
✓
Devialet Gemini 2 ✓
ANC makes use of advanced technology to actively cancel noise. ANC works when, it detects and analyzes the sound pattern outside and inside the earbud and after inverts the soundwaves to cancel it out. Simply put, it's like having +1 (sound from your surrounding) and producing -1 (counter sound by the device) giving 0 which results in a reduced level of noise.
Devialet Gemini 2 have Active Noise Cancellation allowing you to listen at lower volume levels, good for your ears since you don't need to crank up the earbuds volume to overcome background noise.
The Sony WF 1000XM4 too have ANC which makes both earbuds ideal for plane rides and morning commutes. Each work with different noise cancellation settings, pick the setting that you prefer for commute or that suites your chill time.
Has Passive Noise Reduction
Sony WF 1000XM4
✓
Devialet Gemini 2 ✓
The Devialet Gemini 2 sit well in place, creating an acoustic covering that tones down background noise well as preventing the earbuds voice audio from leaking out at the same.
Both of these devices have passive noise reduction this implies that they reduce ambient noise instead of actively using ANC to cancel it out.
Driver Unit Size
Sony WF 1000XM4
6mm
Devialet Gemini 2 10mm
The Devialet Gemini 2 have a unit size of 10mm in diameter, the bigger the unit the more powerful, and can produce better bass.
The driver unit is basically a mini speaker that produces sound in the device, the unit size determines the loudness of the earbuds.
Sony WF 1000XM4 driver unit is 6mm in diameter,
which means that they have a smaller driver unit than that of Devialet Gemini 2 by 4mm
, a common assumption that driver units of a bigger size automatically produce better sound quality.
However, large drivers find it difficult to produce high frequencies so yeah, larger drivers can generate louder sound, but this does not indicate that they produce better quality sound.
Lowest Frequency
Sony WF 1000XM4
20Hz
Devialet Gemini 2 5Hz
The Devialet Gemini 2's lowest frequency is at 5Hz, low-frequency response inidcates how well a particular audio device produces low frequencies that can be heard, and if it alters the signal while at it.
Sony WF 1000XM4's lowest frequency is at 20Hz, this means that
Devialet Gemini 2 can produce a juicier bass than the Sony WF 1000XM4
Highest Frequency
Sony WF 1000XM4
40,000Hz
Devialet Gemini 2 20,000Hz
Devialet Gemini 2's highest frequency is at 20,000Hz, high-frequency response tells how well an audio component produces high audible frequencies and if it changes to the signal while at it.
Sony WF 1000XM4's highest frequency is at 40,000Hz, this means that
Sony WF 1000XM4 generate a clearer and crispier treble than the Devialet Gemini 2
Sound Pressure Level
Sony WF 1000XM4
105dB/mW
Devialet Gemini 2 120dB/mW
SPL, is the level of pressure of sound, measured in decibels, dB, Devialet Gemini 2's measurement is 120dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Sony WF 1000XM4's sound pressure level measurement is 105dB/mW. The sound pressure level, a device is can be perceived differently by different people, so we need to have the means to get an objective measurement of sound level expressed in numerical terms.
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