台灣野外生物物種豐富，相關之研究亦有卓越之表現。在野外環境中的生物鳴叫聲收集是生物聲學(Bioacoustics)研究的一項重要工作，研究人員可藉由收集到的生物鳴叫聲，了解該生物之分佈、習性及研究其行為。傳統之鳴聲收集工作大多以市售錄音筆搭配人工的方式直接進行，方法簡便快速但缺乏彈性，且錄音內容之完整性容易受時間或空間等因素而有所限制。
為解決上述問題，本論文以低功率微處理器ARM Cortex-M3為核心，搭配錄音、螢幕顯示、按鍵輸入、SD卡、藍芽通訊、溫度濕度偵測等模組進行實作，電源可選擇以電池供電或透過變壓器連接市電。操作人員可將本套錄音系統放置於野外進行聲音收集，或於室內直接錄音亦可。透過本錄音系統，操作人員可事先設定所要錄音的時間區段，並選擇較恰當且有效率的錄音參數進行錄音，對於錄音進行時的環境條件，如溫度與濕度，亦可逐一的記錄下來。研究人員可在聲音與資料收集後，進一步的進行分析研究。
實作結果顯示，本系統提供了一套優於傳統錄音筆、具彈性且適用於生物聲學研究的野外錄音系統。系統可將收錄之聲音與環境條件成功記錄到SD卡內，SD卡最大容量可達32G。在待機模式下消耗功率為0.36W，運作於錄音模式下消耗功率0.72W，以一般市面行動電源實際供應10000mAh容量為例，每天錄音4小時/待機20小時的狀態下可連續運作約5天；以24小時無間斷錄音可連續運作約2.9天。

There are rich and diverse living creatures in Taiwan, the research on biology is also outstanding. The work of collecting animal/insect sounds in open field is crucial in bioacoustics. The researchers can study the species distribution, behavior and living habits by analyzing these sounds. A conventional method for collecting animal/insect sounds often uses the commercial pen recorders and operates these recorders manually, which is easy and convenient, but inflexible. And there are some restrictions on this method, such as memory capacitance, recording duration and pen recorder set up.
In order to solve the issue above, an open field audio recording system with low power microprocessor ARM Cortex-M3 core has been realized. The display, buttons, SD card, Bluetooth transmission, temperature sensor and humidity sensor are integrated into the system. Either battery or DC adapter is applicable to power the system. The researchers can place these audio recorders outdoors to collect the sounds or operate indoors to record the sounds directly. The researchers can pre-program the recording start/pause time slot, configure the recording parameters and log the temperature and humidity. All these collection of data are helpful for biologists to do the further analyses.
The experiment result shows that we achieved a flexible audio recording system which is applicable to place in open field, and ideal for bioacoustics research. This recording system can record the sounds and store data to SD card successfully, and the maximum capacity is 32GB. The power consumption is 0.36 Watt and 0.72 Watt in standby mode and recording mode respectively. If we take a 10000mAh battery and operate this system in recording mode 4 hours per day, we can have a continuous operation for 5 days. If we have a nonstop recording, we can operate this system for 2.9 days as well.

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