And Alberto's SDRadio 4/4 now Andy G4JNT
On 21/09/2007, Andy Talbot <[EMAIL PROTECTED]> wrote: > Is there a standard polarity for I/Q data as it relates to left and > right channels as used in SDRs? > > So far, for generating I/Q Tx data I have Johan's 500Hz tone > generator, G3PLX's SDR Transmitter software and have today just > updated my DFCWi Generating software (Dual Frequency CW with idle > tone). All these progs agree on polarity, which is defined such that > COS(theta) goes to the left channel, and SIN(theta) to the right. At > least I think that's the case! > > The DFCW software forms its tones by writing to a .WAV file then > replaying it, and that certainly is written in the sequence COS > followed by SIN, ie left, right. I'm not sure if Peter and Johan did > it this way round intentionally. > > 3/3 the same way round does look to be a standard, but it would be > nice to make sure ... > > Andy G4JNT > www.scrbg.org/g4jnt >
