https://uncpress.org/book/9781469675985/high-bias/^^^
The cassette tape was revolutionary.
My interest in the compact cassette system (began in 1969) morphed into an interest in audio [including Quad] and later video.
I have 2 surround sound encoded pre-recorded cassettes (a Radio Shack Stereo-4 matrix encoded and an RCA Dolby Surround encoded).
I just bought low end stereo cassette decks, I bought some pre-recorded cassettes, didn't get a deck with Dolby B NR until 1979.
Kirk Bayne
The cassette tape was revolutionary.
My interest in the compact cassette system (began in 1969) morphed into an interest in audio [including Quad] and later video.
I have 2 surround sound encoded pre-recorded cassettes (a Radio Shack Stereo-4 matrix encoded and an RCA Dolby Surround encoded).
I just bought low end stereo cassette decks, I bought some pre-recorded cassettes, didn't get a deck with Dolby B NR until 1979.
Kirk Bayne