dsperber
500+ Head-Fier
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It occurs to me that A16 SE notion is conceptually very similar to what I used to do for myself decades ago, when I was making cassette tape recordings on my home audio system for use in my car. Lots of vintage analog equipment involved, but my goal was to provide in-my-car duplication of the then-novel "Carver sonic hologram" approach to deliver a 3D-like audio sensation. Again, the idea was to use two speakers with the listener seated in a "sweet spot of a properly shaped room". And through what presumably were based on partial crosstalk techniques feeding signals from both channels to the opposite channel with appropriate delays and other [analog-only, since that's what existed in those days] signal processing, the audible result of the resulting sound waves to the listener was to receive a sensation of "volume and space" and 3D-like "all around sound", rather than just the underlying L/R stereo coming from the two speakers.
I wanted to produce that same auditory effect... in my car! My approach was to actually record the binaural output of the Carver processing on my stereo cassettes, and play it back in my car. Presumably it would hopefuly sound in my car like it did in my home. Why not?
Home production included recording on a Nakamichi CR-7A cassette deck (of which I still have TWO) that includes both Dolby-B and Dolby-C noise resudtion, passing first through a Carver C-9 Sonic Hologram Creator to do the processing. In even older days, before acquiring all of the "Nakamichi Separates" system components in 1986, I also used a separate DBX 224 noise reduction system (competitor for Dolby-A), which required a corresponding car-based physical DBX "expanding" playback unit (that I had installed back then inside the glove box of my car) but which I just cannot recall the make/model of right now.
The playback end of this was in my car, which was typical 80's-vintage after-market high-end audio specialist super-upgraded. They used to have a special huge car audio section OUTSIDE in the parking lot at CES in Las Vegas every year that car audio enthusiasts would flock to (including me!). My system centered on a Nakamich TD-1200ii in the dashboard, with tri-amplified power (lots of space taken up in the trunk where the three amps and customized crossovers were bolted to the back-panel) along with 4 woofers on the rear deck behind the rear seats, mid-range speakers around the rear and front compartments and in the doors and down in the running board near the floor, and Foster ribbon tweeters on left/right of the dashboard along with a very good center speaker on the dash as well. It really did sound terrific.
Most importantly, the playback of the stereo recording of what got produced out of the Carver C-9 (intended for playback via two L/R stereo loudspeakers in a room) through my 2-channel multi-speaker high-end car stereo audio system really DID produce a very clearly discerned 3D-like sensation. I believe the sound effect produced by the smaller closed compartment of the car's cabin actually made the overall "hologram" sensation even stronger than in a large rectangular-solid listening room with just the two speakers. There really was a discernible "sound field, in front of me on the dashboard". I thought I could hear "where the horns were coming from", etc., i.e. from either the left or right side of that "stage". I do actually believe this is the direct result of whatever Carver had done in their analog processing between the content of the two channels, to provide a somewhat enhanced "placement" of certain frequencies, and thus created an enhanced stereo effect of the underlying source which became more noticeable as a more pronounced L/R location effect.
Anyway, I LOVED how my cassette recordings sounded when played back in my car. It was like the performer/singer was "on stage" in front of me on the dashboard, surrounded by the musicians. And those Foster ribbon tweeters were unmatched.
I wanted to produce that same auditory effect... in my car! My approach was to actually record the binaural output of the Carver processing on my stereo cassettes, and play it back in my car. Presumably it would hopefuly sound in my car like it did in my home. Why not?
Home production included recording on a Nakamichi CR-7A cassette deck (of which I still have TWO) that includes both Dolby-B and Dolby-C noise resudtion, passing first through a Carver C-9 Sonic Hologram Creator to do the processing. In even older days, before acquiring all of the "Nakamichi Separates" system components in 1986, I also used a separate DBX 224 noise reduction system (competitor for Dolby-A), which required a corresponding car-based physical DBX "expanding" playback unit (that I had installed back then inside the glove box of my car) but which I just cannot recall the make/model of right now.
The playback end of this was in my car, which was typical 80's-vintage after-market high-end audio specialist super-upgraded. They used to have a special huge car audio section OUTSIDE in the parking lot at CES in Las Vegas every year that car audio enthusiasts would flock to (including me!). My system centered on a Nakamich TD-1200ii in the dashboard, with tri-amplified power (lots of space taken up in the trunk where the three amps and customized crossovers were bolted to the back-panel) along with 4 woofers on the rear deck behind the rear seats, mid-range speakers around the rear and front compartments and in the doors and down in the running board near the floor, and Foster ribbon tweeters on left/right of the dashboard along with a very good center speaker on the dash as well. It really did sound terrific.
Most importantly, the playback of the stereo recording of what got produced out of the Carver C-9 (intended for playback via two L/R stereo loudspeakers in a room) through my 2-channel multi-speaker high-end car stereo audio system really DID produce a very clearly discerned 3D-like sensation. I believe the sound effect produced by the smaller closed compartment of the car's cabin actually made the overall "hologram" sensation even stronger than in a large rectangular-solid listening room with just the two speakers. There really was a discernible "sound field, in front of me on the dashboard". I thought I could hear "where the horns were coming from", etc., i.e. from either the left or right side of that "stage". I do actually believe this is the direct result of whatever Carver had done in their analog processing between the content of the two channels, to provide a somewhat enhanced "placement" of certain frequencies, and thus created an enhanced stereo effect of the underlying source which became more noticeable as a more pronounced L/R location effect.
Anyway, I LOVED how my cassette recordings sounded when played back in my car. It was like the performer/singer was "on stage" in front of me on the dashboard, surrounded by the musicians. And those Foster ribbon tweeters were unmatched.
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