| 摘要 |
<p>1. Device for sound reproduction in several dimensions from a stereo record, comprising, in addition to a stereo system, at least a pair of additional speaker units (14a, 14b) intended to be located opposite to the speaker units (10a, 10b) of the stereo system in a room, and a circuit for feeding the pair of additional speaker units (14a, 14b) from the signals which drive the speaker units of the stereo system, said circuit having a delay line (26) which receives the driving signal, part of the output signal of the delay line being combined with a direct non-delayed signal and another part being fed back upstream of the delay line, characterized in that the circuit for feeding the pair of additional speaker units comprises a common head circuit (24) provided with a mixer for mixing the input signals of the two stereo signals from the stereo system and in that said other part is fed back through an attenuating filter for attenuation from a frequency of about 500 Hz.</p> |
