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RO. C.. Ramsey, "A New Cardioid-Line Microphone," Paper 90, (1959 October.). doi: RO. C.. Ramsey, "A New Cardioid-Line Microphone," Paper 90, (1959 October.). doi:
Abstract: A new dynamic microphone, designed to increase the usable microphone-to-source distance, is described. Designed particularly for television and motion picture applications where the usable microphone working distance must be a maximum, the model 642 has improved directivity and high sensitivity. The improved directivity is achieved by functioning as a first order gradient microphone at bass frequencies and as a line microphone at high frequencies. A detailed description of the directional characteristics is included.

@article{ramsey1959a,
author={ramsey, robert c.},
journal={journal of the audio engineering society},
title={a new cardioid-line microphone},
year={1959},
volume={},
number={},
pages={},
doi={},
month={october},} @article{ramsey1959a,
author={ramsey, robert c.},
journal={journal of the audio engineering society},
title={a new cardioid-line microphone},
year={1959},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={a new dynamic microphone, designed to increase the usable microphone-to-source distance, is described. designed particularly for television and motion picture applications where the usable microphone working distance must be a maximum, the model 642 has improved directivity and high sensitivity. the improved directivity is achieved by functioning as a first order gradient microphone at bass frequencies and as a line microphone at high frequencies. a detailed description of the directional characteristics is included.},}

TY - paper
TI - A New Cardioid-Line Microphone
SP - EP -
AU - Ramsey, Robert C.
PY - 1959
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 1959 TY - paper
TI - A New Cardioid-Line Microphone
SP - EP -
AU - Ramsey, Robert C.
PY - 1959
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 1959
AB - A new dynamic microphone, designed to increase the usable microphone-to-source distance, is described. Designed particularly for television and motion picture applications where the usable microphone working distance must be a maximum, the model 642 has improved directivity and high sensitivity. The improved directivity is achieved by functioning as a first order gradient microphone at bass frequencies and as a line microphone at high frequencies. A detailed description of the directional characteristics is included.