![]() If you want to record the impulse response using an ALSA device with 8 channels, use the following command (see Recording multichannel sound how to use wios ) Assume the use of tsp8.wav having eight TSP signals. Play multiple TSP signals because their addition reduces background noise and reverberation. Impulse responses are measured in two steps: (1) playing and recording the TSP signal, and (2) calculating impulse responses from TSP signals. Wavesurfer /usr/bin/harktool3_utils/16384.little_endian.tspįigure 5.1: Configuration of wavesurfer needed to read raw files Directions To read the file, use wavesurfer (to install on Ubuntu, use sudo apt-get install wavesurfer) Then, open the file with wavesurfer, This is a raw file, with32 bit floating amplitude data installed in series. Similarly, 16384.little_endian.tsp is also installed to the same path. However, if the environment is noisy, e.g., an air conditioner is running, we recommend to use 16-times TSPs to suppress the effect of the noise. If the environment is quiet, you can use 8-times TSPs which is short. You can decide the number of TSPs depending on the environment of the measurement. ![]() Note that NO spaces should be inserted between TSPs. Since this file includes a single TSP signal, it is necessary to cut and paste to make multiple TSPs (e.g., 8 or 16 times) using waveform editing software, such as matlab, or python. Upon installing harktool , a wave file of a single TSP signal is installed in /usr/bin/harktool3_utils the file name is 16384.little_endian.wav. You need a loudspeaker, a microphone array, an audio device that can simultaneously play and record a sound, and a signal including multiple TSPs. To measure impulse responses for sound source localization and sound source separation. ![]()
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