What are Dolby B, C, and S, HX Pro, and DBX? Are they compatible?
Dolby B, C, S, and DBX are techniques for increasing the signal/noise ratio of recordings. All work in similar ways: they compress the dynamic range of the sound during recording, then expand it back upon playback. As much as we would like it to be otherwise, you only get correct reproduction if you use Dolby B to play back a Dolby B tape. Same for Dolby C, Dolby S, and DBX. Dolby HX Pro is the exception. Dolby B works mostly with higher frequencies; it increases their levels during recording and decreases their levels, and the levels of high-frequency noise such as tape hiss, during playback. Dolby B tapes can be played back without Dolby B processing, but high frequencies are over-emphasized and the sound will be excessively bright. This can be compensated for to some extent by turning down the treble control.
Dolby B, C, S, and DBX are techniques for increasing the signal/noise ratio of recordings. All work in similar ways: they compress the dynamic range of the sound during recording, then expand it back upon playback. As much as we would like it to be otherwise, you only get correct reproduction if you use Dolby B to play back a Dolby B tape. Same for Dolby C, Dolby S, and DBX. Dolby HX Pro is the exception. Dolby B works mostly with higher frequencies; it increases their levels during recording and decreases their levels, and the levels of high-frequency noise such as tape hiss, during playback. Dolby B tapes can be played back without Dolby B processing, but high frequencies are over-emphasized and the sound will be excessively bright. This can be compensated for to some extent by turning down the treble control.
Dolby B, C, S, and DBX are techniques for increasing the signal/noise ratio of recordings. All work in similar ways: they compress the dynamic range of the sound during recording, then expand it back upon playback. As much as we would like it to be otherwise, you only get correct reproduction if you use Dolby B to play back a Dolby B tape. Same for Dolby C, Dolby S, and DBX. Dolby HX Pro is the exception. Dolby B works mostly with higher frequencies; it increases their levels during recording and decreases their levels, and the levels of high-frequency noise such as tape hiss, during playback. Dolby B tapes can be played back without Dolby B processing, but high frequencies are over-emphasized and the sound will be excessively bright. This can be compensated for to some extent by turning down the treble control.
Dolby B, C, S, and DBX are techniques for increasing the signal/noise ratio of recordings. All work in similar ways: they compress the dynamic range of the sound during recording, then expand it back upon playback. As much as we would like it to be otherwise, you only get correct reproduction if you use Dolby B to play back a Dolby B tape. Same for Dolby C, Dolby S, and DBX. Dolby HX Pro is the exception. Dolby B works mostly with higher frequencies; it increases their levels during recording and decreases their levels, and the levels of high-frequency noise such as tape hiss, during playback. Dolby B tapes can be played back without Dolby B processing, but high frequencies are over-emphasized and the sound will be excessively bright. This can be compensated for to some extent by turning down the treble control.
Dolby B, C, S, and DBX are techniques for increasing the signal/noise ratio of recordings. All work in similar ways: they compress the dynamic range of the sound during recording, then expand it back upon playback. As much as we would like it to be otherwise, you only get correct reproduction if you use Dolby B to play back a Dolby B tape. Same for Dolby C, Dolby S, and DBX. Dolby HX Pro is the exception. Dolby B works mostly with higher frequencies; it increases their levels during recording and decreases their levels, and the levels of high-frequency noise such as tape hiss, during playback. Dolby B tapes can be played back without Dolby B processing, but high frequencies are over-emphasized and the sound will be excessively bright. This can be compensated for to some extent by turning down the treble control.
