Has Active Noise Cancellation (Noise Control)
Audio Technica ATH TWX9
✓
Xiaomi Redmi Buds 4 Pro ✓
Active noise cancellation utilises more advanced kind of tech to reduce unwanted ambient sounds. ANC works when, it listens to the sound pattern of incoming noise and after inverts the soundwaves to cancel it out. In simple terms, it's like taking +1 (sound from your surrounding) and adding -1 (counter sound by the device) to make 0 thus "diluting" the noise.
The Xiaomi Redmi Buds 4 Pro have ANC allowing you to listen at lower levels of volume, causing less ear fatigue since you don't have to crank up the earbuds volume to outcompete background sounds.
The Audio Technica ATH TWX9 too have ANC making either of the earbuds ideal for flights and morning commutes. The Xiaomi Redmi Buds 4 Pro and Audio Technica ATH TWX9 work with different noise cancellation settings, pick the noise cancellation type that suits your commute or that suites your chill time.
Has Passive Noise Reduction
Audio Technica ATH TWX9
✓
Xiaomi Redmi Buds 4 Pro ✓
Xiaomi Redmi Buds 4 Pro sit tightly in place, creating a sound covering that tones down background noise and also prevents the device sound from leaking out at the same.
Both of these devices have passive noise reduction this means that they limit ambient noise without using ANC to cancel it out.
Driver Unit Size
Audio Technica ATH TWX9
5.8mm
Xiaomi Redmi Buds 4 Pro 11mm
The Xiaomi Redmi Buds 4 Pro have a unit size of 11mm in diameter, bigger drivers are more powerful, and can produce better bass.
A driver unit is basically a mini speaker that makes sound in the earbuds, the unit size corellates with the loudness of the device.
Audio Technica ATH TWX9 driver unit is 5.8mm in diameter,
which implies that they have a smaller driver unit than that of Xiaomi Redmi Buds 4 Pro by 5.2mm
, a common assumption that driver units of a bigger size automatically produce better sound quality.
However, large drivers usually have difficulty producing high frequencies so yes, larger drivers can generate louder sound, but this does not indicate that they deliver better quality sound.
Lowest Frequency
Audio Technica ATH TWX9
20hz
Xiaomi Redmi Buds 4 Pro 20hz
The Xiaomi Redmi Buds 4 Pro's lowest frequency is at 20Hz, low-frequency response inidcates how well an audio device produces low frequencies that can be heard, and if it alters the signal while at it.
Audio Technica ATH TWX9's lowest frequency is at 20Hz, this implies that
both devices make sound with equal bass
Highest Frequency
Audio Technica ATH TWX9
40,000hz
Xiaomi Redmi Buds 4 Pro 40,000hz
Xiaomi Redmi Buds 4 Pro's highest frequency is at 40,000Hz, high-frequency response shows how well a particular audio device produces high audible frequencies and if it adjustments to the signal on its way through.
Audio Technica ATH TWX9's highest frequency is at 40,000Hz, this implies that
both devices can generate equal treble
Sound Pressure Level
Audio Technica ATH TWX9
102db/mw
Xiaomi Redmi Buds 4 Pro ✗
SPL, is the level of pressure of sound, measured in decibels, dB, Audio Technica ATH TWX9's measurement is 102dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
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