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Sample Delay Calculator |
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| この情報はストアのものより古い可能性がございます。 | ||||
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価格 | 170円 | ダウンロード |
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|---|---|---|---|---|
| ｼﾞｬﾝﾙ | ユーティリティ | |||
サイズ | 38.6MB | |||
| 開発者 | Malgorzata Zarczynska | |||
| 順位 |
| |||
| ﾘﾘｰｽ日 | 2013-08-30 16:00:00 | 評価 | 評価が取得できませんでした。 | |
| 互換性 | iOS 以降が必要です。 iPhone、iPad および iPod touch 対応。 | |||
The Sample Delay Calculator is a quick and easy reference calculator for time-aligning speaker systems and microphones for both live sound and recording applications.
Useful for all live sound, classical recording and broadcast engineers, and even for sound installations.
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- Why time align sound? -
The propagation speed of electricity down a copper cable is virtually infinite, at two-thirds the speed of light. The speed of sound through air, conversely, is a lot slower, and is dependent on air temperature. Therefore, for two point sources of a coherent sound, wavefronts will arrive at different times at a specific point depending on the difference in distance between the two sources. This causes audible blurring of transients and comb filtering, or even a distinct echo in the instance where the time of arrival differences are greater than 50ms. This problem also effects recording, whereby microphones capturing a single source may have great distance variations between them, for example in orchestral recording. By delaying the spot mic on an instrument to the main array, the engineer can ensure that the sound will arrive time coherently when printed onto tape, thus improving the clarity of the mix.
Time aligning and sample-level digital delay is a luxury recently found with the introduction of DAWs and digital mixers. Before this, when sound was mixed on analog desks, there was nothing much the engineer could do to correct the alignment error. In recording applications, arguably, the subtle time of arrival differences captured by the microphones contributed to the Haas effect, allowing more accurate aural localisation to the human ear when listening back in stereo. However, we were not able to overcome transient issues and the effects of comb filtering, and could only go by our ears. Many gigs and recordings still came out well thirty years ago though - as we all know - so always trust your ears!
- How does the app work? -
The Sample Delay Calculator is provided to give quick delay calculation and ease of mind for precision alignment of speaker systems to a single location, and time alignment of microphones, where accuracy is key. It works based on the simple Speed = Distance/Time equation, but fully expanded using the most accurate derivations to compensate for other imperfections including air temperature. It specifies the required delay in milliseconds and samples, which you can then input into your digital mixer, DAW or speaker management controller.
Please note that the app calculates the delay for direct sound, not diffuse such as those reflecting from walls and other surfaces. Therefore, you should always still trust your ears, as the Sample Delay Calculator is only theoretically accurate when used in a strictly free-field environment. However, it does mean you won't have to drag a calculator with you to your next gig, or go loosely by the "1ft=1ms" rule.
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App design and development by Malgorzata Zarczynska
Theory and research by Chris Kalcov
----
©2013 3G Sounds
For more information, visit ww.3gsounds.co.uk
Useful for all live sound, classical recording and broadcast engineers, and even for sound installations.
----
- Why time align sound? -
The propagation speed of electricity down a copper cable is virtually infinite, at two-thirds the speed of light. The speed of sound through air, conversely, is a lot slower, and is dependent on air temperature. Therefore, for two point sources of a coherent sound, wavefronts will arrive at different times at a specific point depending on the difference in distance between the two sources. This causes audible blurring of transients and comb filtering, or even a distinct echo in the instance where the time of arrival differences are greater than 50ms. This problem also effects recording, whereby microphones capturing a single source may have great distance variations between them, for example in orchestral recording. By delaying the spot mic on an instrument to the main array, the engineer can ensure that the sound will arrive time coherently when printed onto tape, thus improving the clarity of the mix.
Time aligning and sample-level digital delay is a luxury recently found with the introduction of DAWs and digital mixers. Before this, when sound was mixed on analog desks, there was nothing much the engineer could do to correct the alignment error. In recording applications, arguably, the subtle time of arrival differences captured by the microphones contributed to the Haas effect, allowing more accurate aural localisation to the human ear when listening back in stereo. However, we were not able to overcome transient issues and the effects of comb filtering, and could only go by our ears. Many gigs and recordings still came out well thirty years ago though - as we all know - so always trust your ears!
- How does the app work? -
The Sample Delay Calculator is provided to give quick delay calculation and ease of mind for precision alignment of speaker systems to a single location, and time alignment of microphones, where accuracy is key. It works based on the simple Speed = Distance/Time equation, but fully expanded using the most accurate derivations to compensate for other imperfections including air temperature. It specifies the required delay in milliseconds and samples, which you can then input into your digital mixer, DAW or speaker management controller.
Please note that the app calculates the delay for direct sound, not diffuse such as those reflecting from walls and other surfaces. Therefore, you should always still trust your ears, as the Sample Delay Calculator is only theoretically accurate when used in a strictly free-field environment. However, it does mean you won't have to drag a calculator with you to your next gig, or go loosely by the "1ft=1ms" rule.
----
App design and development by Malgorzata Zarczynska
Theory and research by Chris Kalcov
----
©2013 3G Sounds
For more information, visit ww.3gsounds.co.uk
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