![]() It also differs from problems of speech understanding by machine since it deals with general audio signals, such as natural sounds and musical recordings.Īpplications of computer audition are widely varying, and include search for sounds, genre recognition, acoustic monitoring, music transcription, score following, audio texture, music improvisation, emotion in audio and so on.Ĭomputer Audition overlaps with the following disciplines: Like computer vision versus image processing, computer audition versus audio engineering deals with understanding of audio rather than processing. Technically this requires a combination of methods from the fields of signal processing, auditory modelling, music perception and cognition, pattern recognition, and machine learning, as well as more traditional methods of artificial intelligence for musical knowledge representation. Inspired by models of human audition, CA deals with questions of representation, transduction, grouping, use of musical knowledge and general sound semantics for the purpose of performing intelligent operations on audio and music signals by the computer. The engineer Paris Smaragdis, interviewed in Technology Review, talks about these systems - "software that uses sound to locate people moving through rooms, monitor machinery for impending breakdowns, or activate traffic cameras to record accidents." Since the notion of what it means for a machine to "hear" is very broad and somewhat vague, computer audition attempts to bring together several disciplines that originally dealt with specific problems or had a concrete application in mind. It records up to 30 minutes for free.Computer audition (CA) or machine listening is the general field of study of algorithms and systems for audio interpretation by machines. It is able to sync your lecture recordings to cloud servers without taking memory. Platform: Android 5.0 and up or iOS 10.0 or laterĪs its name indicated, Rev is a lecture recorder app to record voice and audio on iPhone and Android smartphone. The biggest advantage is to transcript your lecture recordings into text file, so that you can view them directly. Platform: Android 2.1 and up or iOS 12.0 or laterĪudioNote is a lecture recorder app for both iPhone and Android devices. For iOS users, it is the easiest way to record and edit lectures and other sound around you without paying a penny. Voice Memos is the preinstalled lecture recorder app on iPhone and iPad. ![]() Part 2: Top 3 Lecture Recorder Apps for iPhone/Android Top 1: Voice Memos It is able to change your PC into a lecture recorder and save what you want without extra software. If you have updated your PC to Windows 10, you will get many new features including a Voice Recorder app. In another word, you can edit your lecture recordings on timeline within the same program directly.ĭon't miss: Top 5 Audacity Alternatives for Editing Audio Files Top 5: Windows 10 Voice Recorder In fact, it is used as an audio editor primarily. The learning curve is not friendly to beginners.Īudacity is an open-source lecture recorder. It also can record lectures online or in real world. Many studios use it to create albums and other audio products. The lecture recorder is not available to PC.Īdobe Audition is a professional lecture recorder. It offers an audio recording feature to turn your MacBook into a lecture recorder. However, it is far more than a simple video player. ![]() QuickTime Player is the preinstalled media player on Mac. Finally, click the Save button if you are satisfied. Then pre-listen to the audio file with the built-in media player. When you want to stop the lecture recording, click the Stop button on the toolbar. To record an online lecture, enable System Sound while disabling Microphone.Ĭlick the REC button to begin recording the lecture immediately. To add background music, toggle on System Sound otherwise disable it. Make sure to turn on the Microphone option and adjust the volume if you want to record a lecture in classroom. You can see two options in the main interface to perform different tasks: If you wish to change the options, click the Gear icon to open the Preferences dialog. Tip: By default, it will record lectures in MP3 and save to your computer. Then choose Audio Recorder to open the main interface. It is compatible with Windows 10/8/7 and Mac OS X. Launch the best lecture recorder once you install it on your computer. After the free-trial, you need to purchase a license.
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