German speech recording required - non professionals

We are looking for German people (Berlin, Hamburg, Frankfurt, Leipzig) who are able to record 30 min of his voice using his mobile phone in quiet room. You need to make a 30 minute recording of your voice. About 500 phrases In order to improve the speech interaction ability of smart watches, a large number of speeches of people from different regions, with different ages or genders are needed to train the recognition ability of machines. Now people from Germany required (Berlin, Hamburg, Frankfurt, Leipzig) Total 1050 person. 525 male, 525 female. Requirements: Environment: A quiet room with a noise-free background Device: Use mobile phones to visit the online platform to record text Content (will be provided): 500 phrases or sentences, including voice interactive command words and frequently used sentences Requirements for reading: Standard official language pronunciation - that is, close to the standard of an official media (such as CCTV and CNR), no strong accent or dialect Note: 1. Mouth should be about 20-30 cm away from the microphone of the mobile phone, no blockings. Volume should be 65-75db, moderately and stably uttered. 2. In case of sudden noises during recording, re-record the sentence. 3. Pay attention to the prompt of text speed when reading. 4. Clear and coherent speech; no mispronunciation. 5. Ensure around 0.5s silent time at the beginning and end of the audio to avoid audio being truncated.