sonicRemove deep bass and high treble for a narrow telephone or radio sound.
Hear an exampleTry a before-and-after example using our original six-second sample. No upload needed.
Generated locally with the same audio engine used for your files.
Telephone / radio narrows the frequency range by removing low bass and high treble. Sonic uses two high-pass and two low-pass filters to make the roll-offs stronger, leaving a middle band that resembles a small speaker or telephone.
Low cutoff controls where the low-frequency roll-off starts, from 100 to 1000 Hz. Raising it removes more body and warmth.
High cutoff controls the upper roll-off, from 1500 to 6000 Hz. Lowering it removes more brightness and consonant detail. The frequencies between the two settings remain most prominent.
The default 400–2800 Hz produces a narrow telephone-like tone. Try 150–5000 Hz for a wider radio character. Tune while listening to a clear spoken phrase or a vocal line.
Filtering removes real content from the source. A narrow range can make music thin and reduce intelligibility. This effect does not add static, tuning noise, distortion or a broadcast compressor.
It recreates a narrow-band tonal character, rather than modeling a specific device or transmission system.
Upload your audio or try the sample, adjust the controls above, then click Apply effects. Select Original and Result to compare. Change the settings and apply again to revise. Every revision starts from the untouched original, and Download WAV saves the latest applied version. The player’s Volume control changes only listening volume.