Engine exhaust sound synthesizer

Details Engine exhaust sound synthesizer Engine exhaust sound synthesizer

1995-11-21

1998-11-10

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Sound effects

381 86, 446409, H03G 300

Patent

active

058356053

ABSTRACT:
An engine exhaust sound synthesizer is fundamentally configured by an exhaust waveform creating unit and an exhaust pipe circuit. The exhaust waveform creating unit creates an exhaust waveform signal based on accel information and engine speed information. Herein, the accel information is subjected to non-linear conversion, representing relationship between an amount of manipulation of an accel manipulator and an engine output, so that an engine output signal is produced. A plurality of exhaust waveforms are stored in advance; hence, one of them is selected based on the engine speed information and engine output signal. Then, the exhaust waveform selected is combined together with the engine output signal so that the exhaust waveform signal is created. The exhaust pipe circuit, simulating behavior of air-pressure waves propagating through pipes of an exhaust system, is designed similar to a waveguide-type circuit which is configured by delay circuits and junctions. So, the exhaust pipe circuit imparts a simulated exhaust-pipe characteristic to the exhaust waveform signal so as to produce the exhaust sound signal representing synthesized exhaust sound of an engine. By controlling the amount of manipulation of the accel manipulator, it is possible to provide realistic exhaust sound, with a high live-audio effect, whose characteristic closely follows behavior of an exhaust action of an actual engine.

REFERENCES:
patent: 4219962 (1980-09-01), Dankman et al.
patent: 4946416 (1990-08-01), Stern et al.
patent: 5045016 (1991-09-01), Stern et al.
patent: 5047736 (1991-09-01), Ghose
patent: 5237617 (1993-08-01), Miller
patent: 5321759 (1994-06-01), Yuan
patent: 5371802 (1994-12-01), McDonald et al.
patent: 5414230 (1995-05-01), Nieuwendijk
patent: 5446790 (1995-08-01), Tanaka
patent: 5517173 (1996-05-01), Cha et al.
patent: 5586187 (1996-12-01), Webb
patent: 5635903 (1997-06-01), Koike et al.
patent: 5734726 (1998-03-01), Truchsess

Affiliated with

Also associated with

Rating

Engine exhaust sound synthesizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Engine exhaust sound synthesizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine exhaust sound synthesizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1525463