it should have an effect..... the higher the frequency should mean a higher file size, i don't know how it would fit into the calculation though, for images the way to determine file size is #of pixels times the color depth divided by 8, so if the image was 320 x 240 @ 24 bit color it would be:
320 x 240 = 76800 bytes or 76.8k
24 x 8 (8 bits in a byte) = 3 bytes
76800 x 3 = 230400 bytes or 230.4k
but for audio, i have no idea other than #of seconds times bitrate
