Delay of the reverberant part of an impulse response from the previous task and auralization
Task 4
Input data
Program
Output data
- Speech:
- Drums:
- Orchestra:
We took one of the channels from one of our binaural CATT impulse responses that we created in the previous part. We chose the left ear and exported it to Matlab as a .m File.
Then we convolved it with speech and music.
In Matlab we created a 2 channels impulse response pair with our CATT impulse response in one of the channels, and the CATT impulse response with reverberation (delayed by some milliseconds) in the other channel.
We also convolved it with speech and music and then compared it to the first one.
Output Data
As a result we get the impression to be in the big room (which was designed in the previous task), with the sound source (speech, drums or orchestra) next to our left ear.
The reverberation of the room changes the timber of the sound while the reduced level and the delay of the sound reaching the right ear gives the impression of positioning the source at our left ear. While different levels of the right ear's response position the source from the receiver (nearer or farer away, and, of course, coming from the left side), different delays just seem to position the listener inside the room, but don't change the direction where the source comes from.
The drums sample seems to be the only one where the delay we chose (20ms) is actually percieved.