There were, however, large individual differences in relative performance on different conditions, indicating the importance of individualized determination of optimum amplification characteristics.

The highest scores were obtained, on the average, for the condition of noncompression, no peak clipping, with the LDL frequency response. Four replications of the Nonsense Syllable Test were administered in quiet and in noise for each experimental condition. Multi-band compression schemes that employ separate con- trol signals for each band). Four hearing-impaired persons served as subjects. A low-frequency roll off below 300 Hz was used to reduce upward spread of masking. The LDL frequency response was obtained by finding the LDL for each subject using one-third octave bands of noise and then determining that frequency response which would amplify each one-third octave band of speech to just below the LDL for that band. The compression conditions included a single-band compression system and two combinations of a two-channel compression system.

This type of compressor is suitable for the treatment of single instruments or voices, which are typically tracked in mono. The noncompression conditions included flat-frequency response and “LDL frequency response,” with and without peak clipping. multi-band compression Single band compressor (mono) A single band compressor (mono) processes the entire frequency range of the incoming signal with a single operational amplifier. Multiband compression is great for getting good articulation out of a fingered bass guitar track, since you can tighten up the lowest frequencies (thus reducing boom and woofiness) without affecting the mid- and high-midrange frequencies, which carry the attack of the sound. Compression and noncompression amplification were compared for a range of conditions.

Multi band vs single band compressor