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Pneumatic Shoe Lacing Apparatus
This invention provides a pneumatic shoe lacing apparatus for the pneumatic lacing of shoe.
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| Number | Title | Issue Date |
| 4061876 | Electronic sound enhancing system An electronic sound enhancing system for improving the symphonic criteria of sound emanating from a performing shell is provided. Microphones are disposed in the performing shell for receiving sound emanating therefrom and converting same to an audio sign... | 12/06/1977 |
| 4053711 | Simulation of reverberation in audio signals An audio system which achieves a concert hall reverberation effect from a stereo input signal. From two stereo input signals the audio system produces quadraphonic signals suitable for application to four speakers in the pattern of a quadraphonic sound re... | 10/11/1977 |
| 4049912 | Channel mixer for multi-channel audio systems An audio system which achieves a concert hall reverberation effect from a stereo input signal. From two stereo input signals the audio system produces quadraphonic signals suitable for application to four speakers in the pattern of a quadraphonic sound re... | 09/20/1977 |
| 4039755 | Auditorium simulator economizes on delay line bandwidth A filter network for use with an acoustic signal reproduction system having at least two, spatially separable, speaker means each capable of reproducing acoustic waves from corresponding electrical signal. The network includes a frequency divider for sepa... | 08/02/1977 |
| 4027101 | Simulation of reverberation in audio signals An audio system which achieves a concert hall reverberation effect from a stereo input signal. From two stereo input signals the audio system produces quadraphonic signals suitable for application to four speakers in the pattern of a quadraphonic sound re... | 05/31/1977 |
| 4021613 | Audio information modifying apparatus An apparatus which modifies sound by introducing selected levels of clipping, sustaining, tone generation, echo effects, phasing effects, and suppression of low and high frequency signals to the input to a conventional audio amplifier thereby producing pl... | 05/03/1977 |
| 4005268 | Solid state echo producing system A solid state electronic system for producing a variable time delayed echo signal from a source of electro-audio input signals including circuitry for reducing noise. For low level signal operation, the system has means for varying the internal reference ... | 01/25/1977 |
| 3992582 | Reverberation sound producing apparatus A reverberation sound producing apparatus is disclosed which has an input terminal supplied with audio frequency signals, filters for dividing the audio frequency signals applied to the input terminal into a plurality of frequency bands, delay lines for d... | 11/16/1976 |
| 3980828 | Reverberation system with extended frequency response A reverberation system which employs low cost, spring reverberators and obtains a frequency response to beyond 9kHz. The high frequency components of an input signal are frequency shifted, to a lower range, applied to a reverberator, and then frequency sh... | 09/14/1976 |
| 3939437 | All-pass reverberator with an MOS delay line The invention provides a circuit for an all-pass reverberator with an MOS delay line and feed back amplifier. The circuit compensates for the frequency-dependent attenuation of the delay line. Two amplifiers of the prior art circuit are replaced by resist... | 02/17/1976 |
| 3939305 | Reverberation mixer circuit This invention relates to a circuit for mixing a direct audio signal with a reverberation signal. The circuit includes an amplitude control for the reverberation signal and an active gain producing element such as, for example, a field effect transistor (... | 02/17/1976 |
