Is this the correct list for inquiries concerning SND? I have need of an audio "leveler", alternatively known as an "automatic gain control". It occurs to me that a software approach might be superior to the use of hardware.
My specific application is production of audio material -- primarily the spoken word -- for use on audio cassettes, audio CDs, and MP3 players in an automobile. The normal dynamic range of a high-fidelity recording of a class or other audio presentation is too wide for this environment: if the audio level on the playback device is adjusted so that loud passages are not painful to the ear, then low passages are lost in the noise of the road, wind, and traffic. A wide variety of hardware audio compressors is available, but the only way which I see to make use of a compressor is to use a high compression ratio (10:1 or even 20:1) and then increase the level of the signal at the compressor input to the point that even the softest passages are compressed slightly. There are a few hardware audio levelers, but they typically range in price from a thousand dollars upward. Levelers allow setting of a "target" level for the output, and increase the gain when the input level is below the target. When the input level is above the target, a leveler acts as a conventional compressor, with user-adjustable compression ratio. So, can I use SND for leveling? Or is there another package which is more suitable? I have not yet attempted to use SND. I presently am using Audacity for audio editing in the Debian/Gnome environment. RLH _______________________________________________ Cmdist mailing list [email protected] http://ccrma-mail.stanford.edu/mailman/listinfo/cmdist
