201010449 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種多功能無線通訊裝置，尤其涉及一種具 音頻調整功能之多功能無線通訊裝置及其使用之音頻調整 方法。 【先前技術】 國際電工協會IEC581標準及我國GB/T14277-93國家標 準對於音頻之頻段劃分為：30-150HZ為低頻段，150Hz-500Hz _為中低頻段，500KHz-5KHz為中高頻段，5KHz-16KHz為高 頻段。人耳能聽到之頻率範圍一般為20Hz-20KHz，人隨著 年齡增長’一般’首先會對高頻段之音頻出現輕度聽力障 礙。故中老年用戶使用無線通訊裝置時，需對高頻段之音頻 加以專門放大’才可獲得較佳語音收聽品質。 習知無線通訊裝置於通話時，一般都可藉由對音量之調 節來獲得較佳之語音效果。然，習知無線通訊裝置通常係對 ❹包含有所有頻段音頻之音量進行整體放大或者減小，並不會 針對特定頻段音頻來加以調節。藉由該方式進行之通話音頻 之調整，於放大高頻段音頻之同時，對中低頻段之音頰也進 行了放大，可能會造成低頻段音頻對高頻段音頻之遮蔽效應 (Maskmg Effect) ’從而造成部分高頻段音頻損失，無法獲得 較好之*音效果。必針對高頻段音頻進行放大，才能讓通話 者獲得較好之語音收聽品質。 【發明内容】 有鑒於此，有必要提供一種具特定頻段音頻放大功能之 6 201010449 多功能無線通訊裝置。 另，有必要提供一種上述多功能無線通訊裝置使用之音 頻調整方法。 一種多功能無線通訊裝置’包括依次電性連接之一音頻 訊號接收單元、-音頻調整單元及—音頻訊號輸出單元；該 音頻訊號接收單元㈣接收音頻訊號，該音頻訊號經處理後 傳送至日頻δ雜單元，調整後之音頻訊號經音頻訊號輸出單 元輸&;該音_整單元可對音軌舰行特㈣段之放 擊大。 -種音頻调整方法，該方法包括以下步驟：接收音頻訊 號；調整音頻訊號，對特定難之音頻訊號進行放大；輸出 音頻訊號。 相較習知技術，所述之多功能無線通訊裝置可對音頻訊 號進行特疋頻丨又之放大，避免對音頻訊號整體進行放大而產 生之遮蔽效應’從而獲得較好之語.音收聽品質。 Α【實施方式】 Ο 請參閱圖1，本發明較佳實施方式多功能無線通訊裝置 100包括一音頻訊號接收單元10、一音頻訊號處理單元2〇、 一類比/數位轉換單元 30(Analog to Digital Convert Unit，以 下簡稱A/D轉換單元）、一音頻調整單元4〇、一存儲單元5〇、 一數位/類比轉換單元 60(Digital to Analog Convert Unit，以 下簡稱D/A轉換單元）及一音頻訊號輸出單元70。該音頻訊 號接收單元1〇、音頻訊號處理單元20、A/D轉換單元30、 音頻調整單元40、D/A轉換單元60及音頻訊號輸出單元70 201010449 依次電性連接，且存儲單元50電性連接至音頻調整單元40。 該音頻訊號接收單元10用於接收類比音頻訊號，其可 為一 RF(Radio Frequency，射頻）電路。 該音頻訊號處理單元20用於對音頻訊號接收單元10接 收之類比音頻訊號進行雜訊消除等處理。 該A/D轉換單元30用於將類比音頻訊號轉換成數位音 頻訊號，該A/D轉換單元30可基於預定之採樣率及比特率 於類比音頻訊號之時間軸及幅度軸上執行數位化。採樣率及 ®比特率可以根據用戶之設置或者根據即時輸入音頻訊號之 特徵而改變。 該音頻調整單元40包括一數位訊號處理器41(Digital Signal Processor，以下簡稱 DSP)及一微控制器 42(Micro Controller Unit，以下簡稱MCU)。該DSP41用於對數位音 頻訊號進行解碼，並將解碼後之音頻訊號傳送至MCU42進 行調整。該MCU42可從音頻訊號中劃分出所需之頻段，並 _分別針對每個頻段設定需放大之分貝數，該分貝數可根據用 戶之聽力狀況進行設定。該MCU42接收到DSP41之音頻訊 號後，首先對該音頻訊號進行分析，提取其中之所需頻段之 音頻訊號，例如，對於可能存在高頻段聽力障礙之中老年用 戶而言，一般需要提取5KHz-20KHz範圍之高頻段部分之音 頻訊號；然後，將提取之所需頻段之音頻訊號按照預設之放 大分貝數進行放大；最後，將已放大之頻段之音頻訊號與其 他頻段之音頻訊號進行合成，並將合成之音頻訊號發送至 D/A轉換單元60。 8 201010449 該存儲單元50用於存儲音頻調整單元40調整後之音頻 訊號資料，其可輸入、存儲及輸出資訊，如硬碟、快閃記憶 體等。 該D/A轉換單元60用於接收音頻調整單元40調整後之 音頻訊號，並將數位音頻訊號轉換成類比音頻訊號。 該音頻訊號輸出單元70用於輸出音頻訊號，將包含音 頻資訊之電訊號轉換成聲波，通常，習知揚聲器即可承擔音 頻訊號輸出單元70之作用。 ® 請一併參閱圖2，本發明較佳實施方式多功能無線通訊 裝置100之進行音頻調整之工作流程，包括以下幾個步驟： 步驟S1 :該音頻訊號接收單元10接收類比音頻訊號， 並將該訊號傳送至音頻訊號處理單元20。 步驟S2 :該音頻處理單元20對該音頻訊號進行雜訊消 除，並將處理完之音頻訊號傳送至A/D轉換單元30。 步驟S3 :該A/D轉換單元30接收音頻處理單元70所 _傳送之音頻訊號，將該類比訊號轉換為數位訊號，即根據預 定之採樣率及比特率於類比音頻訊號之時間軸及幅度軸上 執行數位化，然後將轉換成數位音頻訊號傳送至音頻調整單 元40。 步驟S4 ·· DSP41對數位音頻訊號進行解碼處理，使數 位音頻訊號轉換成MCU可以處理之數位音頻訊號格式。 步驟S5 : MCU42對解碼後之數位音頻訊號進行調整。 該步驟包括以下子步驟： 步驟S501 :該MCU42對該音頻訊號進行分析，並根據 9 201010449 用戶之需要提取所需頻段之音頻訊號。例如，對於可能存在 高頻段聽力障礙之中老年用戶，一般需要提取5ΚΗζ-20ΚΗζ 範圍内之高頻段部分之音頻訊號。 步驟S502:將提取之所需頻段之音頻訊號根據用戶之需 要進行放大。 步驟S503:將放大之頻段之音頻訊號與其他頻段之音頻 訊號進行合成，並將合成後之音頻訊號傳送至D/A轉換單元 60，然後，進入步驟S6及步驟S7。 ® 步驟S6:談存儲單元50存儲該調整後之數位音頻訊號。 步驟S7 :該D/A轉換單元60將該調整後之數位音頻訊 號轉換為類比音頻訊號，並將該音頻訊號傳送至音頻訊號輸 出單元70。 步驟S8:該處理完畢之音頻訊號經音頻訊號輸出單元 70輸出。 所述多功能無線通訊裝置100對音頻訊號進行特定頻段 @之放大，避免對音頻訊號整體放大而產生之遮蔽效應，從而 獲得較好之語音收聽品質。 【圖式簡單說明】 圖1係本發明較佳實施方式之多功能無線通訊裝置之功 能模組圖。 圖2係本發明較佳實施方式之音頻調整方法之工作流程 圖。 【主要元件符號說明】 多功能無線通訊裝置100 音頻訊號接收單元10 201010449 音頻訊號處理單元 20 A/D轉換單元 30 .音頻調整單元 40 數位訊號處理器 41 微控制器 42 存儲單元 50 D/A轉換單元 60 音頻訊號輸出單元 70201010449 IX. Description of the Invention: [Technical Field] The present invention relates to a multifunctional wireless communication device, and more particularly to a multifunctional wireless communication device having an audio adjustment function and an audio adjustment method therefor. [Prior technology] The International Electrotechnical Commission IEC581 standard and China's GB/T14277-93 national standard for the audio frequency band is divided into: 30-150HZ for the low frequency band, 150Hz-500Hz _ for the low and medium frequency bands, 500KHz-5KHz for the medium and high frequency bands, 5KHz -16KHz is the high frequency band. The range of frequencies that can be heard by the human ear is generally 20 Hz to 20 kHz. As people grow older, the 'general' first causes mild hearing impairment in the high-frequency audio. Therefore, when a middle-aged and old user uses a wireless communication device, it is necessary to specifically amplify the audio of the high frequency band to obtain a better voice listening quality. Conventional wireless communication devices generally achieve better speech effects by adjusting the volume during a call. However, conventional wireless communication devices generally have an overall amplification or reduction of the volume of audio contained in all frequency bands, and are not adjusted for audio in a particular frequency band. The adjustment of the call audio by this method, while amplifying the high-band audio, the accent of the middle and low frequency bands is also amplified, which may cause the masking effect of the low-band audio on the high-frequency audio (theskmg effect) Some high-frequency audio loss is caused, and a good sound effect cannot be obtained. The high-band audio must be amplified to give the caller a better voice listening quality. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a multi-function wireless communication device with a specific frequency band audio amplification function. In addition, it is necessary to provide an audio frequency adjustment method used by the above-described multi-function wireless communication device. A multifunctional wireless communication device includes: an audio signal receiving unit, an audio adjusting unit and an audio signal output unit; the audio signal receiving unit (4) receives an audio signal, and the audio signal is processed and transmitted to the daily frequency. Δ-hetery unit, the adjusted audio signal is output through the audio signal output unit &; the sound_the whole unit can smash the special (four) segment of the soundtrack ship. An audio adjustment method, the method comprising the steps of: receiving an audio signal; adjusting an audio signal to amplify a specific difficult audio signal; and outputting an audio signal. Compared with the prior art, the multi-function wireless communication device can perform special frequency amplification on the audio signal to avoid the shadowing effect generated by amplifying the audio signal as a whole, thereby obtaining a better speech. .实施 [Embodiment] Referring to FIG. 1 , a multi-function wireless communication device 100 includes an audio signal receiving unit 10, an audio signal processing unit 2, and an analog/digital conversion unit 30 (Analog to Digital). Convert Unit (hereinafter referred to as A/D conversion unit), an audio adjustment unit 4〇, a storage unit 5〇, a digital to analog conversion unit 60 (hereinafter referred to as D/A conversion unit) and an audio Signal output unit 70. The audio signal receiving unit 1 , the audio signal processing unit 20 , the A/D conversion unit 30 , the audio adjusting unit 40 , the D/A converting unit 60 , and the audio signal output unit 70 201010449 are electrically connected in sequence, and the storage unit 50 is electrically connected. Connected to the audio adjustment unit 40. The audio signal receiving unit 10 is configured to receive an analog audio signal, which may be an RF (Radio Frequency) circuit. The audio signal processing unit 20 is configured to perform noise cancellation and the like on the analog audio signal received by the audio signal receiving unit 10. The A/D conversion unit 30 is configured to convert the analog audio signal into a digital audio signal, and the A/D conversion unit 30 can perform digitization on the time axis and the amplitude axis of the analog audio signal based on the predetermined sampling rate and bit rate. The sampling rate and ® bit rate can be changed according to the user's settings or according to the characteristics of the input audio signal. The audio adjustment unit 40 includes a digital signal processor (DSP) (hereinafter referred to as DSP) and a microcontroller (hereinafter referred to as MCU). The DSP 41 is used to decode the digital audio signal and transmit the decoded audio signal to the MCU 42 for adjustment. The MCU 42 can divide the required frequency band from the audio signal, and set the number of decibels to be amplified for each frequency band, and the number of decibels can be set according to the user's hearing condition. After receiving the audio signal of the DSP 41, the MCU 42 first analyzes the audio signal and extracts the audio signal of the desired frequency band. For example, for elderly users who may have high frequency hearing impairment, it is generally necessary to extract 5KHz-20KHz. The audio signal of the high frequency band part of the range; then, the audio signal of the extracted frequency band is amplified according to the preset amplification decibel number; finally, the audio signal of the amplified frequency band is combined with the audio signal of other frequency bands, and The synthesized audio signal is sent to the D/A conversion unit 60. 8 201010449 The storage unit 50 is configured to store the adjusted audio signal data of the audio adjustment unit 40, which can input, store and output information such as a hard disk, a flash memory, and the like. The D/A conversion unit 60 is configured to receive the adjusted audio signal by the audio adjustment unit 40 and convert the digital audio signal into an analog audio signal. The audio signal output unit 70 is configured to output an audio signal, and convert the electrical signal including the audio information into an acoustic wave. Generally, the conventional speaker can bear the function of the audio signal output unit 70. As shown in FIG. 2, the workflow of the audio adjustment of the multifunctional wireless communication device 100 according to the preferred embodiment of the present invention includes the following steps: Step S1: The audio signal receiving unit 10 receives an analog audio signal, and The signal is transmitted to the audio signal processing unit 20. Step S2: The audio processing unit 20 performs noise cancellation on the audio signal, and transmits the processed audio signal to the A/D conversion unit 30. Step S3: The A/D conversion unit 30 receives the audio signal transmitted by the audio processing unit 70, and converts the analog signal into a digital signal, that is, according to a predetermined sampling rate and bit rate on the time axis and the amplitude axis of the analog audio signal. The digitization is performed on the upper portion, and then converted into a digital audio signal and transmitted to the audio adjustment unit 40. Step S4 ·· DSP41 decodes the digital audio signal to convert the digital audio signal into a digital audio signal format that the MCU can process. Step S5: The MCU 42 adjusts the decoded digital audio signal. The step includes the following sub-steps: Step S501: The MCU 42 analyzes the audio signal and extracts the audio signal of the required frequency band according to the needs of the user of 9 201010449. For example, for older users who may have high-frequency hearing impairments, it is generally necessary to extract audio signals from the high-band portion of the range of 5ΚΗζ-20ΚΗζ. Step S502: The audio signal of the extracted desired frequency band is amplified according to the needs of the user. Step S503: synthesize the audio signal of the amplified frequency band with the audio signals of other frequency bands, and transmit the synthesized audio signal to the D/A conversion unit 60, and then proceed to step S6 and step S7. ® Step S6: The storage unit 50 stores the adjusted digital audio signal. Step S7: The D/A conversion unit 60 converts the adjusted digital audio signal into an analog audio signal, and transmits the audio signal to the audio signal output unit 70. Step S8: The processed audio signal is output via the audio signal output unit 70. The multi-function wireless communication device 100 performs amplification of a certain frequency band @ on the audio signal to avoid the shadowing effect generated by the overall amplification of the audio signal, thereby obtaining a better voice listening quality. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a functional block diagram of a multifunctional wireless communication device in accordance with a preferred embodiment of the present invention. 2 is a workflow diagram of an audio adjustment method according to a preferred embodiment of the present invention. [Main component symbol description] Multi-function wireless communication device 100 Audio signal receiving unit 10 201010449 Audio signal processing unit 20 A/D conversion unit 30. Audio adjustment unit 40 Digital signal processor 41 Microcontroller 42 Storage unit 50 D/A conversion Unit 60 audio signal output unit 70
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