Progress of the Digital Signal Processing (DSP) part of the Project.
Our Project, Automatic Audio Replacement of Objectionable Content for Sri Lankan Locale, is mainly based on Digital Signal Processing (DSP), Natural Language Processing (NLP), and Speech Recognition. Among them, the audio pre-processing phase, which mainly focuses on the Digital Signal Processing is the area I worked on, and this article briefs the progress of that part in our project. The DSP portion of our implemented system mainly has two focuses. 1. Noise Reduction 2. Amplification Audio inputs of the users might be of varying qualities and they might be recorded under different environmental conditions. In order to proceed ahead with our system, and to detect objectionable content efficiently and accurately, having cleaned audios are important. Hence, when a user inputs an audio into the system, it will first go through the noise reduction process. We have tried various filters for our audio samples, and finally, we came into a conclusion that Low