Koh Kah Oon Augustine wrote: > we were ... unable to get any signals recorded from the sound card/mic > array system for months until we found out that the issue could be > solved by enabling audio capture on the sound card in Alsamixer > 1. How does enabling capture in alsamixer actually allow for a device > to be able to start recording signals This is not "enabling capture"; capturing was always enabled. Alsamixer shows all mixer controls implemented by the hardware. In your case, there is a "capture mute" switch whose default value is not what you'd like. > what changes did alsamixer actually make to ALSA (its drivers etc) > that would have miraculously enabled the signals to be recorded? The driver tells the device to change the setting of that mixer control. Regards, Clemens ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user