Stereo Circuits

  

Stereo sound systems can be either "true" or "natural" stereo in which a live sound is captured, with any natural reverberation or ambience present, by an array of microphones, or "artificial" or "pan-pot" stereo, in which a single-channel (mono) sound is reproduced over multiple loudspeakers. By varying the relative amplitude of the signal sent to each speaker an artificial direction (relative to the listener) can be suggested.

The control which is used to vary this relative amplitude of the signal is known as a "pan-pot" (panoramic potentiometer). By combining multiple "pan-potted" mono signals together, a complete, yet entirely artificial, sound field can be created. In technical usage, true stereo means sound recording and sound reproduction that uses stereographic projection to encode the relative positions of objects and events recorded.

So the two microphones are placed in strategically chosen locations relative to the sound source, with both recording simultaneously. The two channels will be similar, but each will have distinct time-of-arrival and sound-pressure-level information. Stereo recordings often cannot be played on monaural systems without a significant loss of fidelity. Since each microphone records each wavefront at a slightly different time, the wavefronts are out of phase; as a result, constructive and destructive interference can occur if both tracks are played back on the same speaker. This is known as phase cancellation.

 

 

News

Trends to Watch in Audio at CES 2017

Trends to Watch in Audio at CES 2017 ConsumerReports.org ... in computers, the market is still huge. At the big Consumer Electronics Show in Las Vegas next week, manufacturers are slated to introduce some exciting new...

Dec 30, 2016

Guest commentary: Hazards of electronic waste

Guest commentary: Hazards of electronic waste - News - Wicked ... Wicked Local Cape Cod When you look it up "E-waste" on the Internet, you can easily get 313000 hits within 33 seconds. That sounds like there could...

Jan 14, 2017

Casio To Introduce New Electronic Musical Instruments At Winter ...

Casio To Introduce New Electronic Musical Instruments At Winter ... Yahoo Finance ANAHEIM, Calif., Jan. 19, 2017 /PRNewswire/ -- Today, Casio America, Inc., is striking a chord with music enthusiasts and professional...

Jan 19, 2017

Pioneer adds analog synth to DJ groove toolkit

New Atlas Pioneer adds analog synth to DJ groove toolkit New Atlas There was a time when the party or club DJ would just have to scratch, mix and spin to get the joint jumping and the bodies grooving. More recently,...

Jan 20, 2017

Electronics store turns 95

Electronics store turns 95 Waterloo Cedar Falls Courier The shop is full of vintage electronics components for those who want to keep their old phonograph, radio or other video or audio device running. The store also...

Jan 8, 2017

Opening a Window

Radio magazine Opening a Window Radio magazine Unlike print newspapers, traditional printed books and their lineages, electronic media always involve a chicken and egg scenario in which the consumer has to buy a...

Jan 19, 2017

Fujifilm X-T20 Review

imaging resource Fujifilm X-T20 Review imaging resource Regarding the mechanical and electronic shutter, the Fuji X-T20 has a mechanical shutter speed range of 30s to 1/4000s, although it can shoot for up to 60...

Jan 20, 2017

Forgotten audio formats: Stereo 8

Ars Technica UK Forgotten audio formats: Stereo 8 Ars Technica UK The 8-track cartridge, aka the Stereo 8, first appeared at trade shows in 1964, just 18 months after the cassette, and it did initially seem to...

Jan 18, 2017

The sound of success: Andreas Sennheiser

ArabianBusiness.com The sound of success: Andreas Sennheiser ArabianBusiness.com Following the Middle East launch of the world's most expensive headphones in December, Andreas Sennheiser, co-CEO of Hanover-based...

Jan 21, 2017

Casio To Introduce New Electronic Musical Instruments At Winter NAMM 2017

Casio To Introduce New Electronic Musical Instruments At Winter NAMM 2017 IT Business Net Casio's advanced electronic musical instruments including the new CELVIANO Grand Hybrid GP-300WE, Chordana Play app, Portable...

Jan 19, 2017

Units & Modules