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Effect of digital recording parameters on discrimination features of acoustic signals in noise / T.S. Santoro ; J.S. Russotti ; and, T.E. Hanna.
Connect to full text Available online
View online- Format:
- Book
- Government document
- Author/Creator:
- Santoro, T. S.
- Series:
- Report (Naval Submarine Medical Research Laboratory) ; no. 1199.
- Naval Submarine Medical Research Laboratory report ; no. 1199
- Language:
- English
- Subjects (All):
- Sonar.
- Auditory perception.
- Sound--Recording and reproducing--Digital techniques.
- Sound.
- sonar.
- Physical Description:
- 1 online resource (iv, 10, [2] pages) : illustrations
- Place of Publication:
- Groton, CT : Naval Submarine Medical Research Laboratory, [1996]
- Summary:
- An experiment was performed to determine the effects of digital signal processing sample rate and quantization code on auditory perception of sonar signals. Fifteen sonar signals were sampled and played back under nine conditions of sample rate and quantization code. In each condition all pairwise combinations of these signals in noise were presented to 35 subjects in an ABX discrimination task. The resulting matrices of discrimination errors were analyzed by multidimensional scaling. The first two scaling dimensions recovered in order of statistical significance were associated with perceptions related to (1) signal beat at low frequencies and (2) signal spectral shape in the higher frequencies. Further recovered dimensions were related to particular temporal modulation of individual signals. The importance of the first three discrimination features depended on the three sample rate conditions. Each halving of the sample rate removed one of the features from any significant contribution to the discrimination task. The quantization conditions had little influence on the significance of the discrimination features except for the mid-range sample rate (6.25 kHz).
- Notes:
- Title from title screen (viewed September 6, 2012).
- "11 April 1996."
- Includes bibliographical references (pages 9-10).
- Other Format:
- Print version: Santoro, T.S. Effect of digital recording parameters on discrimination features of acoustic signals in noise
- OCLC:
- 227830928
- Access Restriction:
- APPROVED FOR PUBLIC RELEASE.
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