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I am enrolled in a course about phonetic analysis and it demands a final project. I am wondering if I can do this on iOS. I know that there is a way to record, but is there a way to get the waveform or something that could be analyzed from that recording?
Yes. You can open the recording or audio file and access its sample data. APIs for reading the file and its sample data exist. Accelerate.framework can convert your signal from the time domain to the frequency domain. However, iOS frameworks do not include particularly featured APIs for your common signal analyses, so you will need to write the majority of what you need for your analysis algorithms.