constint16_tn_samples,/* i : input frame length in samples */
floatdmx[][L_FRAME48k+NS2SA(48000,IVAS_FB_ENC_DELAY_NS)],/* i/o: downmix signal to be transformed into another format. TODO: buffer size into define? */
floatdmx[][L_FRAME48k+NS2SA(48000,IVAS_FB_ENC_DELAY_NS)],/* i/o: downmix signal to be transformed into another format */
constint16_tn_chnls_dmx_old,/* i : number of downmix channels in the old format */
constint16_tn_chnls_dmx_new)/* i : number of downmix channels in the target format */