Delta modulated signal sampling rate converter using digital mea

Details Delta modulated signal sampling rate converter using digital mea Delta modulated signal sampling rate converter using digital mea

1985-06-10

1986-12-16

LaRoche, Eugene R.

Modulators

Amplitude modulator

Nonlinear device controlled by modulating signal

332 11D, H03C 300

Patent

active

046300074

ABSTRACT:
In the conversion of a first delta modulated signal with a first bit rate into a second delta modulated signal with a second bit rate, a first and second digital signal derived respectively from the first and second delta modulated signals are compared together in an adding circuit (58) followed by an integration circuit (55). In this way an analog intermediary signal can be avoided and the circuit complexity is small.

REFERENCES:
patent: 4361893 (1982-11-01), Bonnerot
patent: 4411003 (1983-10-01), Su
patent: 4467291 (1984-08-01), Roza
Un, C. K., "Voiced/Unvoiced/Silence Discrimination of Speech by Delta Modulation" IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-28, No. 4, Aug. 80, pp. 398-407.

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