JP6814146B2 - オーディオをキャプチャーし、解釈するシステムと方法 - Google Patents
オーディオをキャプチャーし、解釈するシステムと方法 Download PDFInfo
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- JP6814146B2 JP6814146B2 JP2017536224A JP2017536224A JP6814146B2 JP 6814146 B2 JP6814146 B2 JP 6814146B2 JP 2017536224 A JP2017536224 A JP 2017536224A JP 2017536224 A JP2017536224 A JP 2017536224A JP 6814146 B2 JP6814146 B2 JP 6814146B2
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Description
本出願は、2015年6月16日に出願した米国仮出願番号62/193,323、2014年9月25日に出願した米国仮出願番号62/055,037、2014年9月25日に出願した米国仮出願番号62/055,024の各々を、参照して取り込む。
打楽器のような、多くの伝統的音響楽器は、電子システムによってエミュレートされたり、合成されたりできない。電子ドラムをつくろうとする試みの一方で、電子ドラムは、現状、音響ドラムキットの音を再生できず、音響性能の微妙な点は、ドラムに相当する既存の電子機器を使うことで失われる。
本開示は、オーディオ信号をキャプチャーし解釈するシステムおよび方法に向けられ、システムおよび方法による解釈に基づいて選択される音を出力することにも向けられている。さらに、本開示は、システムを動かす方法はもちろんのこと、そのシステムと一体で使用される装置である。
a. 現状のフレーム値は、与えられた時間のウィンドウ(約3ミリ秒)内のすべての先のフレームより、大きい?
b. 現状のフレーム値は、与えられた時間のウインドウ(約3〜16ミリ秒)内の先の平均値+与えられた閾値より大きい?
c. 与えられた時間(〜3ミリ秒)以内に生じる先のオンセットが生じている?
a. 窓化されたデータが、時間振幅表現(time−amplitide expression)に残留して、そのままの状態で留まる。
b. 一定Q変換の使用を通して、対数領域周波数表現(log−spaced frequency representation)に投じられる。
c. (b)のように処理されてから、離散的コサイン変換を適用することで「周波数」ドメインに投じられる。これは、信号内にある周波数構造を保存するデータ圧縮ステップとして振る舞う。
d. メル空間(メル周波数ケプストラム係数変換と同様に)周波数表現または、線形空間周波数表現(離散的フーリエ変換と同様に)のような代わりの周波数表現を用いて、(b) または (c)のように処理される。
e. (b) 、(c)または(d)のように処理されてから、それは、全ての値のルートをとって、またはデシベル計算を適用して、ダイナミックに圧縮される。
近傍解釈が他のケース(すなわち、叩くのが、ドラムヘッドかドラムリムか)で解釈することを用いる一方で、これらの方法は、制御値で最も近傍モデルの使用に重み付けするために、または、あるケース(すなわち、ドラムヘッドのインパクトの位置を決定すること)における幾何学的解釈を使用するために組み合わされる。
較正と訓練
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Claims (8)
- 物体によって生成される振動をキャプチャーするデバイスであって、
前記デバイスは、
前記物体の表面に接触する第1センサーと、
前記物体および前記第1センサーから間隔を置かれ、かつ前記物体に相対して位置される第2センサーと、
前記物体に前記デバイスを固定するための固定エレメントと、備え、
前記第1センサーは前記固定エレメントにより前記物体に接触して配置され、前記第2センサーは、前記固定エレメントにより前記物体に相対して位置される、デバイス。 - 前記第1センサーは、前記固定エレメントにおいて前記物体の振動をキャプチャーする、請求項1に記載のデバイス。
- 前記第1センサーは、圧電センサーエレメントである、請求項1に記載のデバイス。
- 前記第2センサーは、コイルセンサーである、請求項1に記載のデバイス。
- 前記コイルセンサーは、音楽楽器の表面に配置される磁石に相対して固定される、請求項4に記載のデバイス。
- 前記物体は、ドラムであり、前記第1センサーは、前記ドラムのリムに接触し、前記第2センサーは、前記ドラムのヘッドの上に吊るされる、請求項1に記載のデバイス。
- 前記固定エレメントは、クランプであり、当該クランプは前記ドラムのリムの上面にインターフェースする第1締め付け面と、前記ドラムのリムの底面にインターフェースする第2締め付け面とを有し、前記上面は、前記第1センサーを含み、前記底面は、ドラムリムの第1タイプを掴む第1部分、および、ドラムリムの第2タイプを掴む第2部分を有する、請求項6に記載のデバイス。
- 前記第2センサーからの信号と、前記第1センサーからの信号をミキシングするミキシング回路、および、ミックス信号を転送する出力をさらに備える、請求項1に記載のデバイス。
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US20180068646A1 (en) | 2018-03-08 |
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