Abstract: A tankless solar water heater for heating domestic pressurized water having a flexible insulated heat exchanger housing that contracts to accommodate volume reduction when the solar heating fluid cools. A check valve releases gas and solar heating fluid if interior pressure exceeds ambient pressure by more than one pound per square inch, without admitting air into the container or the heat exchanger when volume of the solar heating fluid reduces due to cooling.

Abstract: Two or more wireless devices can be independently controlled by their respective users, a mixer component, or a leader wireless device to perform audio recording, convert the recorded audio into a standard or proprietary audio stream format, and transmit the audio stream to a server. The real-time clocks of two or more participating wireless devices can be synchronized. A wireless device can insert timestamps into the audio stream to facilitate the mixing operation. Mixing of the two or more audio streams recorded by wireless devices can be performed by a mixer component either in real time (contemporaneously with the recording) or asynchronously with respect to the recording. The mixing can be performed in a fully automated mode, and/or in an operator-assisted mode.

Abstract: Two or more wireless devices can be independently controlled by their respective users, a mixer component, or a leader wireless device to perform audio recording, convert the recorded audio into a standard or proprietary audio stream format, and transmit the audio stream to a server. The real-time clocks of two or more participating wireless devices can be synchronized. A wireless device can insert timestamps into the audio stream to facilitate the mixing operation. Mixing of the two or more audio streams recorded by wireless devices can be performed by a mixer component either in real time (contemporaneously with the recording) or asynchronously with respect to the recording. The mixing can be performed in a fully automated mode, and/or in an operator-assisted mode.

Abstract: Two or more wireless devices can be independently controlled by their respective users, a mixer component, or a leader wireless device to perform audio recording, convert the recorded audio into a standard or proprietary audio stream format, and transmit the audio stream to a server. The real-time clocks of two or more participating wireless devices can be synchronized. A wireless device can insert timestamps into the audio stream to facilitate the mixing operation. Mixing of the two or more audio streams recorded by wireless devices can be performed by a mixer component either in real time (contemporaneously with the recording) or asynchronously with respect to the recording. The mixing can be performed in a fully automated mode, and/or in an operator-assisted mode.