| 摘要 |
<p>A receiver, for example a DAB or DRM receiver or an RDS equipped FM radio, includes a decoder 7 for decoding programme type (Pty) information which is broadcast along with the audio programme material. The Pty codes may control an audio equaliser 4 (fig. 1). The equaliser parameters may be pre-defined or set by the user, and are automatically deployed when pre-defined Pty information is received. In a preferred embodiment (fig.2), the decoded Pty information directly adjusts the coefficients or scale factors of the individual frequencies or sub-bands in the audio decoder 3. The decoder 3 could be an MPEG-1 layer 2 or layer 3 codec. The invention finds particular application for in-car or vehicle receivers.</p> |
