共 50 条
- [1] DIRECT-READING FREQUENCY METER JOURNAL OF THE SOCIETY OF MOTION PICTURE ENGINEERS, 1945, 44 (04): : 257 - 262
- [2] A DIRECT-READING FREQUENCY-DIFFERENCE METER AMERICAN JOURNAL OF PSYCHOLOGY, 1948, 61 (03): : 405 - 409
- [4] A direct-reading frequency meter of long range. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1925, 37 : 97 - 100
- [5] A DIRECT-READING FREQUENCY METER FOR THE AUDIO AND SUPERSONIC RANGES REVIEW OF SCIENTIFIC INSTRUMENTS, 1948, 19 (01): : 43 - 46
- [9] A direct-reading frequency meter suitable for high speed recording REVIEW OF SCIENTIFIC INSTRUMENTS, 1935, 6 (02): : 43 - 46
- [10] The Purdue Pitch Meter - A Direct-Reading Fundamental Frequency Analyzer JOURNAL OF SPEECH AND HEARING DISORDERS, 1950, 15 (02): : 135 - 141