Quite some time ago, I was describing how we can stream audio with the help of RTSP. In that example we needed to provide a data stream from which we can read the audio! This is not very flexible and often we want to specify RTSP as output: e.g. in Read more
Quite some time ago, I tried to use the functionality of the Arduino Audio Tools to download a file from an URL and store it on a SD card, but I was running into some problems. I finally found the time to investigate the issue and I have the functionality Read more
Recently I discovered the Micro-RTSP-Audio Project from Thomas Pfitzinger which is based on Micro-RTSP from Kevin Hester. The Real Time Streaming Protocol (RTSP) is an application-level network communication system that transfers real-time data from multimedia to an endpoint device by communicating directly with the server streaming the data. I tried Read more
This blog continues the topic Low Latency Streaming of Audio Data and we have a closer look at ESP-NOW. This is a protocol developed by Espressif, which enables multiple devices to communicate with one another without using Wi-Fi. I was missing a proper implementation that is based on Arduino Streams, Read more
Introduction Traditional streaming protocols, such as RTSP and RTMP, support low-latency streaming. These are quite complex to implement and I did not find any efficient library which would work properly on a microcontroller e.g. on an ESP32. I tried to migrate the live555 project, but so far I did not Read more
The last couple of days I have spent to add SDIF audio output support to my Arduino AudioTools library and I would like to thank joba-1 for testing the solution. Together with my ESP32-A2DP Bluetooth library we can build now a Bluetooth receiver that outputs the audio signals as SPDIF Read more
In the last Blog, I have shown how to use the Synthesizer class. I wanted to verify the audio quality issue by sending the output to Bluetooth Here is the sketch. I just added a callback method to feed the bluetooth source: Arduino Sketch #define USE_MIDI #include “BluetoothA2DPSource.h” #include “AudioTools.h” Read more
As you might know from my last posts I am currently extending my Arduino Audio Tools library to support the AI Thinker Audio Kit which is based on the ES8388 audio chip. . We can turn the AI Thinker ESP32 Audio Kit V2.2 easily into a Bluetooth Speaker with the Read more
Introduction I wanted to make some music streaming functionality available on Arduino. There are plenty of private music services using custom protocols which are out of reach. Fortunately there are also the open source protocols RTP and RTSP: RTP is the transport protocol for real-time data. It provides timestamp, sequence Read more
In the last Blogs I presented – A File Based Versatile MP3 Player – A Streaming MP3 Player – A Streaming AAC Player with Volume Control All these examples were using my Arduino Audio Tools Library. In this final Blog about this topic, I will demonstrate how easy it is Read more