[Feature Request] How to enable haas effect?

[Pairman]

Is there any option in jdsp4linux equivalent to Differential Sound(Haas Effect) in viperfx? I'm new to jamesdsp and don't know the professional words. I tried Fractional delay line in Liveprog and it kinda added some delay, but I feel the center of sound is closer to one ear than another.

So are there methods to enable Haas Effect in jdsp, or do I have to change paramaters of Fractional delay(currently using leftDelay=15.1 and rightDelay=4.2)? Thanks in advance.

[timschneeb]

You're on the right track with the Fractional delay line script.

Looking at a decompilation of Viper's implementation, it works the same except that it uses milliseconds as a unit, while the script in JDSP measures the delay in samples instead.

You can convert these values; the strongest setting (20ms) in Viper would correspond to 960 samples (provided the sample rate is 48000Hz). Using this conversion formula: milliseconds / 1000 * sample_rate = samples. Viper also always delays the right channel, so you should set the left channel delay to 0 samples and the right one to 960 samples to achieve the same behavior as Viper (with 20ms in this example).

Because one channel is delayed, one of your ears hears the sound earlier than the other; I think that's why it can feel like the center of the sound is closer to one ear than another.

[Pairman]

You're on the right track with the Fractional delay line script.

Looking at a decompilation of Viper's implementation, it works the same except that it uses milliseconds as a unit, while the script in JDSP measures the delay in samples instead.

You can convert these values; the strongest setting (20ms) in Viper would correspond to 960 samples (provided the sample rate is 48000Hz). Using this conversion formula: milliseconds / 1000 * sample_rate = samples. Viper also always delays the right channel, so you should set the left channel delay to 0 samples and the right one to 960 samples to achieve the same behavior as Viper (with 20ms in this example).

Because one channel is delayed, one of your ears hears the sound earlier than the other; I think that's why it can feel like the center of the sound is closer to one ear than another.

Thank you! I understand now.