Thu Dec 01, 2005 4:35 am
Hello everybody !
In the last couple of months, I have been doing some research on IRs and how to record them.
As a result of this, I have implemented IR recording tools which use the "Farina log sine sweep" method and partitioned convolution. At the moment, it is possible to
1) generate the sine sweep test signal (and the time-reversed/equalised signal needed for deconvolution)
2) perform high quality (80bit float) convolution which ist needed in order to get the IR from the recorded sine sweep
(I shall put some example IRs on my private server next week, if time allows)
A missing but important feature is the compensation of the "colouring" of the IR introduced by the used speaker. That way you do not need to have and expensive speaker (like the Genelec S30D) but can use any good HiFi speaker.
I wonder if there is an interest in
- discussion about recording IRs (which microphones, which placements etc.)
- a free "PROSPECTUM IR suite" software consisting of the speaker frequency response correction, the sweep generators and the fast (de)convolution routine plus a small "how to..." guide
At the moment the programs only have a command line interface. However, if there is an interest in the "PROSPECTUM IR suite", I can write graphical user interfaces.
Please let me know what you think about this.
Best regards,
Gernot Wurst
In the last couple of months, I have been doing some research on IRs and how to record them.
As a result of this, I have implemented IR recording tools which use the "Farina log sine sweep" method and partitioned convolution. At the moment, it is possible to
1) generate the sine sweep test signal (and the time-reversed/equalised signal needed for deconvolution)
2) perform high quality (80bit float) convolution which ist needed in order to get the IR from the recorded sine sweep
(I shall put some example IRs on my private server next week, if time allows)
A missing but important feature is the compensation of the "colouring" of the IR introduced by the used speaker. That way you do not need to have and expensive speaker (like the Genelec S30D) but can use any good HiFi speaker.
I wonder if there is an interest in
- discussion about recording IRs (which microphones, which placements etc.)
- a free "PROSPECTUM IR suite" software consisting of the speaker frequency response correction, the sweep generators and the fast (de)convolution routine plus a small "how to..." guide
At the moment the programs only have a command line interface. However, if there is an interest in the "PROSPECTUM IR suite", I can write graphical user interfaces.
Please let me know what you think about this.
Best regards,
Gernot Wurst