| 摘要 |
<p>A device for automatic tonal accompaniment in musical instruments equipped with a rhythm unit, the fundamental, the quint, or an other tone related to a chord being held and/or the chord itself becoming available in a predetermined sequence in a selected rhythm, whilst for at least one tonal key a chord sensor is provided at whose output a signal appears in the presence of a chord whilst an associated switching device connected thereto is provided which in the absence of a chord switches the chord sensor to detection of individual tones.</p> |
