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VoIP: Distant voices should lose low frequencies #738

@Rikketh

Description

@Rikketh

Is your feature request related to a problem?

Currently it seems like voices are dampened using only gain, but in reality the distance of an audio source would also affect its frequency makeup. Lower frequencies reflect less, and reduce faster when traveling through air

Describe your preferred solution

Steam Audio's HRTF and frequency handling. Though the aggressiveness may have to be adjusted.

Describe any considered alternatives

While frequency response is non-linear, for 10-23000 Hz ranges we can approximate it with a linear curve (most affected at 10, dropping off at around 5000, flat at 7000+). This can be done using built-in DSP stack and a simple EQ.

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