201124692 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種經配置用於藉由產生聲波而冷卻之音 響冷卻系統。 【先前技術】 現今技術存在於利用由一音響冷卻系統產生的聲波冷卻 一暖物件之情況，一實例係一種聲波諧振系統。此系統之 最重要組件係一音響換能器，即一壓電元件、PVDF(聚偏 二氟乙烯）材料、一揚聲器或任何其他電動、電磁或靜電 換能器。當該換能器連接至一諧振器（諸如一開口諧振導 管或一 Hehnholtz諧振器）時，產生一脈衝氣流。此氣流例 如在電子電路及系統中或在照明設備令係用於冷卻目的。 該脈衝氣流在冷卻方面比應用更為習知的冷卻技術時獲得 的層流氣流更為有效。 玲作一音響冷卻系 ’但可由該換能器 若以足夠低的頻率（例如低於7〇 Hz)操作一音響冷卻系 雖然可使該音響冷卻系統相當無聲 之非線性行為且由該脈衝氣流自身之非線性行為產生高次 谐波。此算高分进、:;生Α工At —--- ..201124692 VI. Description of the Invention: [Technical Field] The present invention relates to an acoustic cooling system configured to be cooled by generating sound waves. [Prior Art] The present technology exists in the case of cooling a warm object by sound waves generated by an acoustic cooling system, an example of which is an acoustic wave resonance system. The most important component of this system is an acoustic transducer, a piezoelectric element, PVDF (polyvinylidene fluoride) material, a speaker or any other electric, electromagnetic or electrostatic transducer. When the transducer is coupled to a resonator, such as an open resonant tube or a Hehnholtz resonator, a pulsed gas stream is generated. This air flow is used, for example, in electronic circuits and systems or in lighting equipment for cooling purposes. This pulsed gas stream is more effective in cooling than the laminar gas flow obtained with the more conventional cooling techniques. Ling made an acoustic cooling system' but by operating the acoustic cooling system at a sufficiently low frequency (eg, below 7 Hz) the acoustic cooling system can make the acoustic cooling system relatively silent and non-linear behavior and by the pulsed airflow Its own nonlinear behavior produces higher harmonics. This is a high score,:; Α Α At At ----- ..
叫W则由該骨響冷卻系 統產生的雜訊之替代解決方案。 150619.doc -4. 201124692 【發明内容】 鑒於上文描述，本發明之—目的係至少減輕上文描述的 門題根據本發明之—態樣，藉由經配置用於藉由產生聲 波而冷部之一音響冷卻系統實現此及其他目的。該系統包 括換月b器及經組態以產生用於激發該換能器之一驅動信 ° 控制單元，其中该驅動信號係包括至少一高次t皆波 之夕為波驅動信號，肖高次譜波經選擇以抑制包含在由 "亥曰響系統產生的該等聲波中的至少—對應高次譜波之存 在。 本發明係基於以下理解：藉由特意將至少一特定選擇的 高次諸波引人用於激發該換能器之該驅動㈣，可抑制由 該音響系統產生的該等聲波中的至少—對應高次譜波之存 在且s此可實現抑制由該音響冷卻系統產生的可聽雜 &本’X月之冷卻系統係有利的，因為不需要包含一第二 換月b态即可實現雜訊抑制。此能夠獲得一低成本之小型化 音響冷卻糸統。 此處之夕6皆波信號意欲指示包括一第一諧波（即一主 要頻率）及-或多個特定選擇的高次諸波之一信號。此 外用於D亥換月b器之該等聲波可較佳以一流體予以產生， 諸如空氣°此外，該換能器可包括-諧振器，其係有利 的，因為可獲得—期望的諧振用於一脈衝氣流。W is an alternative solution to the noise generated by the bone cooling system. 150619.doc -4. 201124692 SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to at least alleviate the above-described problems in accordance with the present invention, by being configured to be cold by generating sound waves. One of the audio cooling systems achieves this and other purposes. The system includes a month-changing device and is configured to generate a driving signal control unit for exciting the transducer, wherein the driving signal includes at least one high-order t-wave is a wave driving signal, Xiao Gao The sub-spectral waves are selected to suppress the presence of at least a corresponding high-order spectral wave contained in the acoustic waves generated by the "Haisheng system. The present invention is based on the understanding that at least one of the acoustic waves generated by the acoustic system can be suppressed by intentionally introducing at least one particular selected higher order wave for exciting the drive (4) of the transducer. The existence of high-order spectral waves and s can achieve the suppression of the audible noise generated by the acoustic cooling system. The cooling system of the 'X-month is advantageous because it does not need to include a second moon-changing b state to achieve miscellaneous Signal suppression. This enables a low-cost, compact audio cooling system. Here, the 6-wave signal is intended to indicate a signal comprising a first harmonic (i.e., a primary frequency) and/or a plurality of selected higher-order waves. Furthermore, the acoustic waves used in the D-changer may preferably be produced by a fluid, such as air. Furthermore, the transducer may comprise a resonator, which is advantageous because it is available - the desired resonance In a pulsed airflow.
該音響冷卻系絲0]·__ A 進步包含一感測器，諸如一麥克 風D玄感測為运調適於傾測由該系統產生的聲波且將關於 4等^ /則的聲波之—聲音信號提供至該控制單元，其中 150619.doc 201124692 該控制單元進一步經組態以基於該聲音信號選擇該驅動信 號之5亥至少一南次s皆波。一優點在於可測量實際雜訊位準 (例如，由於該完整系統產生之雜訊’包含由於該脈衝氣 流之非線性行為產生之雜訊）’且相應地可調整該驅動信 號。 根據一替代實施例’該系統可包括一感測器，該感測器 經調適於測量該換能器中之一感應電壓及一感應電流之至 少一者作為指示由該系統產生的該等聲波且將關於該感應 電壓及該感應電流之至少一者之資訊提供至該控制單元， 其中該控制單元進一步經組態以基於該資訊選擇該驅動信 號之該至少一高次諧波。此可消除一麥克風之需要。 根據本發明之另一態樣，提供一種用於判定經配置用於 藉由產生聲波而冷卻之一音響冷卻系統之一多諧波驅動信 號之方法。該方法包括以下步驟：將一驅動信號提供至一 換能器；回應於該驅動信號而獲得關於由該系統產生的聲 波之一聲音信號；判定該聲音信號之一聲音功率譜；及藉 由引入選擇的至少一高次諧波而轉變該驅動信號使得該聲 音功率譜中之至少一對應高次諧波受到抑制。 可選擇該驅動信號中之該至少—高㈣波之振幅及相位 之至少一者，使得該聲音功率譜中之一對應高次諧波受到 抑制。舉例而言’該驅動信號中之第H之振幅及/或 相位可經調適於最小化該聲音功率譜中之第二譜波，該驅 動信號中之第三諧波之振幅及/或相位可經調適於最小化 該聲音功率譜中之第三諧波’等等。一優點在於可最小化 150619.doc 201124692 與每一高次諧波相關聯之雜訊。 根據貫她例’可自a亥苐一諸波開始藉由將逐漸增加的 咼次諧波重複引入該驅動信號之一程序來判定該多諧波驅 動信號。此外，根據本發明之該音響冷卻系統可有利地包 含在進一步包括一發光裝置之一照明裝置中，其中該音響 冷卻系統可經配置用於冷卻該發光裝置。 當研究後附申請專利範圍及下文描述時可獲得對本發明 之進一步特徵及優點之更深一層之瞭解。熟練的技術人士 應瞭解可在不背離本發明之範圍的情況下組合本發明之不 同特徵以創建除了下文描述的此等實施例之外的實施例。 【實施方式】 自下文詳細描述及隨附圖式將容易理解本發明之各種態 樣’包含其之特定特徵及優點。 下文將參考隨附圖式更完整地描述本發明，其中顯示本 發明之當前軚佳實施例。然而，本發明可以許多不同形式 予以體現且不應被理解為局限於本文闡述的該等實施例； 反而，此等實施例係為了完整及完全Μ以提供，且對熟 練的技術人士充分表達本發明之範圍。全文中相同的參考 符號指代相同的元件。 現在參考該等圖式且特定言之參考圖丨，描繪一種包括 一換能器2之音響冷卻系統丨。該換能器2可係一壓電元 件' PVDP(聚H乙稀）材料、一揚聲器或任何其他電 動、電磁或靜電換能器。圖i中顯示的該換能器2連接至具 有一開口4之一諧振器3。該開口4通常朝向一暖物件，諸 150619.doc 201124692 如在操作㈣待被冷卻之n極體5(led)。 該冷卻系統】進-步包括經配置以產生用於激發該換能 器2之-驅動信號S1之一控料元6，使得在冷卻該咖5 之該開口4處產生以一脈衝氣流形式之聲波。該控制單元6 可連接至-感測器，諸如一麥克風7，該感測器配置在距 離該冷卻系統以-狀距離處且經配置以偵測由該系統i 產生的聲波（或雜訊卜此處，該控制單元6包括用於產生一 基頻信號之—產生器元件8(諸如—信號產生器）、用於轉變 來自該產生器it件8之該信號之—轉變元件9(諸如一信號 處理單it)及歸判定由該麥克風7獲得之mm 之一聲音功率譜之一分析元件10。 該控制單元6可包含一科虛押gg 匕3微處理态、一微控制器、一可程 式化數位信號處理器或另一可程式化裝置。該控制單元6 亦可（或代替）包含-專用積體電路（ASIC)、_可程式化問 陣列可程式化陣列邏輯、一可程式化邏輯裝置或一數位作 號處理器。在該控制單以包含_可程式化裝置（諸如上文 描述的該微處理器或微控制器）時，該處理器可進一步包 含控制該可程式化裝置之操作之電腦可執行碼。另外^ 利用類似電子設備實現由該控制單元6提供的部份功能。 代替利用該麥克風7偵測由該系統產生的聲波，可 用-電壓或電流偵測器"來偵測流經該換能器2之電 該換能器2上之電壓作為由該系統1產生的該等聲波(或雜 訊)之指示。舉例而言’可由先前測試得知由該系統 的㈣聲波與該感應電壓/電流間之關係。因&，由該電 150619.doc 201124692 屋/電流偵測器11獲得的該感應電壓/電流可轉變成可送至 該控制單元中之該分析元件10之一聲音信號。 根據本發明’一多諳波驅動信號可用於抑制由該系統i 產生的該等聲波之該等高次諧波。除了一主要頻率分量 (亦稱為第一諧波）之外，該多諧波驅動信號亦包含一或多 個南次證波。 現在將參考圓1中之該系統及圖2中之示意流程圖描述用 於判疋一多諧波驅動信號之一方法之一實施例。可在組裝 該冷卻系統1期間藉由使用一暫時麥克風7執行此程序。或 者，該麥克風7可包含在該音響冷卻系統中以能夠執行該 多諧波驅動信號之隨後的校準或連續的調整。 在一例不性操作期間，該信號產生器8產生一單一諧波 信號，諸如具有一（例如）6〇 Hz頻率之一正弦信號。最初， 該信號通過該轉變元件9而未改變且因此在步驟2〇ι中’由 僅具有一第一諧波A1之一單諧波驅動信號s丨激發該換能器 2。由該系統1回應於該單諧波驅動信號而產生的該等聲 波由該麥克風7予以偵測，且在步驟202中，關於該等經偵 /貝J的聲波之聲s k號Ss()und被送至該控制單元6中之該分 析元件10。在步驟203中該分析元件10判定該獲得的聲音 信號之一聲音功率譜 具有一第一譜波B1、 波B 4及第五諸波B 5。 第四諧 。該聲音#號之該聲音功率譜在此處 第一 s皆波B2、第三諧波B3、第言皆 接著在步驟204中， ，該轉變元件9藉由將一第二諧波A2引The acoustic cooling wire 0]·__ A progress comprises a sensor, such as a microphone D, which is suitable for measuring the sound waves generated by the system and will be related to the sound waves of the sound waves of 4 Provided to the control unit, wherein 150619.doc 201124692 the control unit is further configured to select at least one south s wave of the drive signal based on the sound signal. One advantage is that the actual noise level can be measured (e. g., because the noise generated by the complete system' contains noise due to the non-linear behavior of the pulsed gas stream)' and the drive signal can be adjusted accordingly. According to an alternative embodiment, the system can include a sensor adapted to measure at least one of an induced voltage and an induced current in the transducer as indicative of the acoustic waves generated by the system And providing information about the at least one of the induced voltage and the induced current to the control unit, wherein the control unit is further configured to select the at least one higher harmonic of the drive signal based on the information. This eliminates the need for a microphone. In accordance with another aspect of the present invention, a method for determining a multi-harmonic drive signal configured to cool one of an acoustic cooling system by generating an acoustic wave is provided. The method includes the steps of: providing a drive signal to a transducer; obtaining a sound signal relating to one of the sound waves generated by the system in response to the drive signal; determining a sound power spectrum of the sound signal; and introducing The selected drive signal is converted by at least one higher harmonic such that at least one corresponding higher harmonic of the sound power spectrum is suppressed. At least one of an amplitude and a phase of the at least - high (four) wave in the drive signal may be selected such that one of the sound power spectra corresponds to a higher harmonic. For example, the amplitude and/or phase of the Hth of the drive signal may be adapted to minimize a second spectral wave in the sound power spectrum, and the amplitude and/or phase of the third harmonic of the drive signal may be Adjusted to minimize the third harmonic in the sound power spectrum' and so on. One advantage is that the noise associated with each higher harmonic can be minimized. According to the example, the multi-harmonic driving signal can be determined by repeating the gradually increasing harmonic harmonics into one of the driving signals. Moreover, the acoustic cooling system in accordance with the present invention can advantageously be included in an illumination device further comprising a lighting device, wherein the acoustic cooling system can be configured to cool the lighting device. A further understanding of further features and advantages of the present invention will become apparent from the study of the appended claims. It will be appreciated by those skilled in the art that the various features of the present invention can be combined to form embodiments other than those described below without departing from the scope of the invention. The various features and advantages of the invention are <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The invention will be described more fully hereinafter with reference to the accompanying drawings, in which, However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided for completeness and completeness, and The scope of the invention. The same reference symbols throughout the text refer to the same elements. Referring now to the drawings and in particular to the drawings, an acoustic cooling system comprising a transducer 2 is depicted. The transducer 2 can be a piezoelectric element 'PVDP (poly H ethylene) material, a speaker or any other electrical, electromagnetic or electrostatic transducer. The transducer 2 shown in Figure i is connected to a resonator 3 having an opening 4. The opening 4 is generally oriented toward a warm object, such as the n-pole 5 (led) to be cooled (45). The cooling system includes a control element 6 configured to generate a drive signal S1 for exciting the transducer 2 such that it is produced in the form of a pulsed airflow at the opening 4 that cools the coffee 5 Sound waves. The control unit 6 can be connected to a sensor, such as a microphone 7, which is disposed at a distance from the cooling system and configured to detect sound waves generated by the system i (or noise) Here, the control unit 6 comprises a generator element 8 (such as a signal generator) for generating a fundamental frequency signal, a transition element 9 for transforming the signal from the generator unit 8, such as a The signal processing unit (it) and the one of the sound power spectrums of one of the mm obtained by the microphone 7 are analyzed by the component 10. The control unit 6 can include a virtual control gg 匕3 micro-processing state, a microcontroller, and a A programmable digital signal processor or another programmable device. The control unit 6 can also (or instead) include an exclusive integrated circuit (ASIC), a programmable array of programmable logic logic, and a programmable a logic device or a digital number processor. When the control sheet includes a _programmable device, such as the microprocessor or microcontroller described above, the processor can further include controlling the programmable device Operation of the computer executable In addition, some functions provided by the control unit 6 are implemented by using similar electronic devices. Instead of using the microphone 7 to detect sound waves generated by the system, a voltage- or current detector can be used to detect the flow through the system. The voltage of the transducer 2 is the voltage of the transducer 2 as an indication of the acoustic waves (or noise) generated by the system 1. For example, the (four) sound waves and the sensing by the system can be known from previous tests. The relationship between voltage/current. The induced voltage/current obtained by the electric device 15021.doc 201124692 house/current detector 11 can be converted into one of the analysis elements 10 that can be sent to the control unit. A multi-chopper drive signal can be used to suppress the higher harmonics of the acoustic waves generated by the system i in accordance with the present invention. In addition to a primary frequency component (also referred to as a first harmonic), The multi-harmonic drive signal also includes one or more southern sub-signal waves. One of the methods for determining a multi-harmonic drive signal will now be described with reference to the system in circle 1 and the schematic flow chart in FIG. Example. The cooling system can be assembled in phase 1 This procedure is performed by using a temporary microphone 7. Alternatively, the microphone 7 can be included in the acoustic cooling system to enable subsequent calibration or continuous adjustment of the multi-harmonic drive signal. During an inoperative operation, the microphone The signal generator 8 produces a single harmonic signal, such as a sinusoidal signal having a frequency of, for example, 6 Hz. Initially, the signal is unchanged by the transition element 9 and thus in step 2" a single harmonic drive signal s of a first harmonic A1 excites the transducer 2. The acoustic waves generated by the system 1 in response to the single harmonic drive signal are detected by the microphone 7 and In step 202, the sound sk number Ss() und of the sound waves of the warriors/beans J is sent to the analysis component 10 in the control unit 6. In step 203, the analyzing component 10 determines that one of the obtained sound signals has a first spectral wave B1, a wave B 4 and a fifth wave B 5 . The fourth harmonic. The sound power spectrum of the sound # is here. The first s is the wave B2, the third harmonic B3, and the second is followed. In step 204, the transition element 9 is introduced by a second harmonic A2.
150619.doc 201124692 激發該換能器時，可抑制該聲音功率譜中之該第二諧波之 聲音功率位準。此外’在步驟205中，可調整該第二諧波 之振幅A及/或相位φ，使得最小化該第二諧波之該聲音功 率位準（即’最小化由該系統產生的該等聲波之該第二諧 波）。此可藉由自一相位^呐及/或一小振幅開始且逐漸增 加。玄相位及/或振幅（同時監測由該轉變的驅動信號激發該 換％器時產生之該聲音功率譜）直到在該聲音功率譜中找 到该第二諧波之一最小聲音功率位準而予以完成。 接著對逐漸增加的高次諧波（即，對該第三諧波且接 著對β亥第四谐波，等等）可重複關於步驟2〇4及2〇5中描述 的程序直到最小化出現在該聲音功率譜中之所有高次諧波 之該聲音位準。 當用所得的多諧波驅動信號（其包含一主要頻率A1及高 ••入諧波A2-A5)激發該換能器2時，僅該第一諧波B丨保留在 由該系統產生的該等聲波中。即，（至少部分地）抑制了所 有咼次諧波且因此抑制了由該系統丨產生的雜訊。 雖然判疋s亥多谐波驅動信號之程序在此處被描述為—迭 代程序，其中一次引入一個逐漸增加的高次諧波，但可能 並行地引入且最佳化複數個高次諧波之參數以加速該程 序。此外，其他雜訊消除演算法或控制演算法一般可應用 於判定該驅動信號中每—高次諧波之最佳設定。舉例而 言，可使用迭代學習控制。 現在轉向圖3，其示意性繪示其中該音響冷卻系統丨包含 在一照明裝置（諸如一燈12)中之一實施例，其進一步包括 150619.doc •10· 201124692 一發光裝置，諸__ ΤΤ7ΓΛ r· 者士 一 LED 5。可依據該應用改變判定該音 響冷卻系統之該多譜波驅動信號之程序。料-實例，在 研發“燈』間可判定該音響冷卻系統之該單—多諧波驅動 L號 接著此預疋多諧波驅動信號可應用於許多燈。舉 ί丨而α 4目的多5皆波驅動信冑可用於—特定模型之所有 燈’因此減小成本。或者’在製造期間可為每—個別燈判 疋^ s a、卻系統之该多譜波驅動信號。若不同燈間之範 圍太大而不能齊用m皮驅動信號時，此可係有利 的0 作為另-實例，在操作期間可調諧該多譜波驅動信號。 右β亥燈12特性就高次譜波而言呈現出隨時間或依據如何安 裝該燈12而改變許多，此可係有利的。此可作為一初始校 準予以完成，或可偶爾重複該校準。亦可使用該多譜波驅 動信號之連續調整。 此外，該麥克風不僅可用於偵測該燈之聲音輸出，而且 也可用於鄰近燈。此使得可使用不關率或相位的驅動信 唬用於各種鄰近燈使得降低所有燈之整體聲音輸出，藉此 避免僅一燈之次最佳化。 雖然已參考本發明之特定實例實施例描述本發明，但許 多不同變更、修改及類似物對於熟習此項技術者將係顯而 易見的。熟練的技術人士在實踐本發明時自研究圖式、揭 示的實施 可能將最 的多重系 示内容及後附申請專利範圍可理解並實現該等揭 例之變更。舉例而言’為說明不同燈間之範圍， 優化程序應用於一組燈。可藉由使用各種未搞接 1506I9.doc 201124692 統之系統實現此，例如每個燈一個音響冷卻系統或一組燈 個音響冷卻系統及另一組燈另一音響冷卻系統。此外， 複數個音響冷卻系統可共用一單一麥克風，來代替對每一 音響冷卻系統使用一麥克風。又另一替代例係使複數個麥 克風共早一單一控制單元。此外，雖然已描述用於冷卻一 led之該音響冷卻系統，該系統亦可用於冷卻其他電子組 件，諸如（舉例而言）積體電路或微處理器。此外，在申請 專利範圍中，肖「包私」不排除其他元件或步驟，且不定 冠詞「一」或「一個」不排除複數。 【圖式簡單說明】 圖1不意性繪示根據本發明之一實施例之一音響冷 統； 07牙、 圖2示意性繪示用於判定_多諧波驅動信號之—方法之 一實施例之一流程圖；及 圖3示意性繪示包括一音響冷卻系統之—例示性昭 置。 ，、 【主要元件符號說明】 1 音響冷卻系統 2 換能器 3 諧振器 4 開口 5 發光二極體 6 控制單元 7 麥克風 150619.doc ,. 201124692 8 產生器元件 9 轉變元件 10 分析元件 11 電壓或電流偵測器 12 燈 150619.doc -13-150619.doc 201124692 When the transducer is excited, the sound power level of the second harmonic in the sound power spectrum can be suppressed. Furthermore, in step 205, the amplitude A and/or phase φ of the second harmonic can be adjusted such that the sound power level of the second harmonic is minimized (ie, 'the minimum of the acoustic waves generated by the system is minimized The second harmonic). This can be initiated by a phase and/or a small amplitude and gradually increased. a phase and/or an amplitude (simultaneously monitoring the sound power spectrum generated when the converter signal is excited by the converted drive signal) until a minimum sound power level of the second harmonic is found in the sound power spectrum carry out. The procedure described in steps 2〇4 and 2〇5 can then be repeated for the increasing higher harmonics (ie, for the third harmonic and then for the fourth harmonic of β, etc.) until minimized This sound level of all higher harmonics in the sound power spectrum is now. When the resulting multi-harmonic drive signal (which includes a primary frequency A1 and a high-input harmonic A2-A5) excites the transducer 2, only the first harmonic B丨 remains in the system generated by the system In the sound waves. That is, all of the 谐波th harmonics are suppressed (at least partially) and thus the noise generated by the system 抑制 is suppressed. Although the procedure for determining the harmonic drive signal is described herein as an iterative procedure in which a gradually increasing higher harmonic is introduced at one time, it is possible to introduce and optimize a plurality of higher harmonics in parallel. Parameters to speed up the program. In addition, other noise cancellation algorithms or control algorithms are generally applicable to determining the optimal setting of each of the higher harmonics in the drive signal. For example, iterative learning control can be used. Turning now to Figure 3, there is schematically illustrated an embodiment in which the acoustic cooling system 丨 is included in a lighting device, such as a light 12, which further includes 150619.doc • 10· 201124692 a lighting device, __ ΤΤ7ΓΛ r· 者一一 LED 5. The procedure for determining the multi-spectral drive signal of the acoustic cooling system can be varied depending on the application. Material-example, the single-multi-harmonic drive L of the acoustic cooling system can be determined between the development of the "lights". Then the pre-multi-harmonic drive signal can be applied to many lamps. The all-wave drive signal can be used for all the lamps of a particular model's, thus reducing the cost. Or 'the multi-spectral drive signal can be determined for each individual lamp during the manufacturing process. When the range is too large to use the m-skin drive signal, this can be advantageous as another example, the multi-spectral drive signal can be tuned during operation. The right β-light 12 characteristics are presented in terms of higher-order spectral waves. This may be advantageous over time or depending on how the lamp 12 is mounted. This may be done as an initial calibration, or may be repeated occasionally. Continuous adjustment of the multi-spectral drive signal may also be used. The microphone can be used not only to detect the sound output of the lamp, but also to the adjacent lamp. This makes it possible to use a drive signal with no off-rate or phase for various adjacent lamps to reduce the overall sound output of all the lamps, therebyThe present invention is described with reference to the specific example embodiments of the present invention, and many variations, modifications, and the like will be apparent to those skilled in the art. The present invention may be understood from the study of the drawings and the disclosed embodiments, and the scope of the appended claims may be understood and effected by the scope of the appended claims. For example, to illustrate the range of different lamps, the optimization procedure It can be applied to a group of lamps. This can be achieved by using a variety of systems that are not connected to the 1506I9.doc 201124692 system, such as one acoustic cooling system per lamp or one set of acoustic cooling systems and another set of lights and another acoustic cooling system. In addition, a plurality of audio cooling systems can share a single microphone instead of using a microphone for each acoustic cooling system. Yet another alternative is to have a plurality of microphones as early as a single control unit. Cooling a led acoustic cooling system, the system can also be used to cool other electronic components, such as, for example, integrated electrical In addition, in the scope of the patent application, the singularity of the singularity does not exclude other components or steps, and the indefinite article "a" or "an" does not exclude the plural. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an acoustic cooling system according to an embodiment of the present invention; FIG. 2 is a schematic diagram showing an embodiment of a method for determining a _ multi-harmonic driving signal. One of the flowcharts; and FIG. 3 schematically illustrates an exemplary arrangement including an acoustic cooling system. , [Main component symbol description] 1 Audio cooling system 2 Transducer 3 Resonator 4 Opening 5 Light-emitting diode 6 Control unit 7 Microphone 150619.doc ,. 201124692 8 Generator component 9 Transition component 10 Analysis component 11 Voltage or Current Detector 12 Light 150619.doc -13-