ROBERT R LANGFORD, P.A.
Nursing at Peachtree Dunwoody Rd, Atlanta, GA
License number
Georgia 2153
Category
Nursing
Type
Surgical
Address
Address
2
5665 Peachtree Dunwoody Rd NE SUITE 150, Atlanta, GA 30342
PO Box 70547, Marietta, GA 30007
PO Box 70547, Marietta, GA 30007
Phone
(404) 252-6104
(404) 847-9683 (Fax)
(770) 579-1894
(770) 579-1899 (Fax)
(404) 847-9683 (Fax)
(770) 579-1894
(770) 579-1899 (Fax)
Professional information
Robert R Langford, Atlanta GA - PA (Physician assistant; also Posterior–anterior)
Specialties:
Surgical Assistance
Address:
5665 Peachtree Dunwoody Rd NE STE 150, Atlanta 30342
(404) 252-6104 (Phone), (404) 847-9683 (Fax)
(404) 252-6104 (Phone), (404) 847-9683 (Fax)
Languages:
English
Hospitals:
5665 Peachtree Dunwoody Rd NE STE 150, Atlanta 30342
Saint Joseph's Hospital of Atlanta
5665 Peachtree Dunwoody Rd North #East, Atlanta 30342
Saint Joseph's Hospital of Atlanta
5665 Peachtree Dunwoody Rd North #East, Atlanta 30342
Robert R Langford, Atlanta GA
Specialties:
Physician Assistant
Address:
5665 Peachtree Dunwoody Rd Ne, Atlanta, GA 30342
Audio Signal Processing System
US Patent:
4184047, Jan 15, 1980
Filed:
Jun 22, 1977
Appl. No.:
5/809145
Inventors:
Robert H. Langford - Atlanta GA
International Classification:
G10H 102
US Classification:
179 1J
Abstract:
An audio signal processing system for enhancing audio signals such as music by providing reverberation, generation of stereophonic or quadraphonic effects, chorusing, flanging, pitch change, vibrato and various combinations of these effects. An audio signal is passed through a compressor, to increase its signal-to-noise ratio,and then through a delay circuit. The delayed audio signal is passed through an expandor to restore the original input level. Preferably, before being applied to the compressor the audio signal passes through a pre-emphasis circuit and, after passing through the expandor, through a de-emphasis circuit, thereby emphasizing desired frequencies. In some embodiments, the processed output signal is blended with the received audio signal to provide a blended audio signal, and in some embodiments the processed audio signal is fed back to the system input for recirculation, providing reverberation. The delay circuit is preferably an analog shift register.