BxAudio
    Star
    A BoxLang module · pure JVM

    Make a kick from code. Master it. Make it speak.

    Synthesize instruments and drums, arrange them on a beat grid, master to a loudness target, speak text with open license voices, score a video and play sound in a game. No Python. Nothing native to install.

    $install-bx-module bx-audio
    Get started Try it in your browser
    • 68 functions
    • EBU R128 mastering
    • 11 open voices
    • 15 pieces made from code
    theme.bxs
    // The hero motif: rising fourths, then a dotted turn
motif = [ [ 0, 69, 4 ], [ 4, 74, 6 ], [ 10, 76, 2 ], [ 12, 78, 4 ] ];
for( n in motif ){
    note = leadNote( n[ 2 ], n[ 3 ] );
    audioAdd( timeline=lead, sound=note, at=n[ 1 ] * step );
}
bass = audioFilter(
    audioOsc( "saw", audioFreq( 38 ), 0.3 ), "lowpass", 900, 2.4 );
mix = audioMix( [ drums, bass, pads, arp, lead, harp ] );
mix = audioMaster( audio=mix, target="streaming" );  // -14 LUFS
audioSave( mix, "theme.mp3" );
    Press play for the BxAudio theme, made by examples/15-theme-14 LUFS
    Press play

    Every one of these was written, not recorded.

    Fifteen complete pieces rendered by the module from a few dozen lines each. Nothing plays until you press a button.

    Everything on the JVM

    One module. The whole audio pipeline.

    Synthesis and mixing

    Band-limited oscillators, drums, filters, a tempo grid, named tracks and kick pumping.

    Text to speech

    Open license voices that download on first use, with speed, pauses and captions timed to the words.

    Score a video

    Cut music to the exact length of a picture, add a voice-over and mux it with FFmpeg. audioMux()

    Loudness and mastering

    Measure the EBU R128 way and deliver to a target with a mastering chain, compressor, limiter and EQ.

    Streaming-14 LUFS
    Podcast-16 LUFS
    Broadcast-23 LUFS

    Game audio

    A real time mixer with buses, loops and crossfades, varied effects and audio sprites.

    Time and pitch

    Stretch, pitch shift and fit a clip to an exact length without the chipmunk.

    Analysis

    FFT, spectrum, tempo and silence detection, plus true peak.

    A real command line

    bx-audio info, master, speak and more. Downloads live in ~/.bxaudio.
    Try it in your browser

    Turn the knobs. Hear the idea.

    A quick preview of four building blocks, played by your browser. The module renders the real thing offline on the JVM, so it sounds the same on every machine.

    BoxLang
    
					
    
				
    
				
     Want the real module? Clone it and run every feature.
    
			
    
		
    
	
    

	
	
	
    
		
    
			
    
				 Voices and licenses
				
    Voices with the paperwork done.
    
				
    We read the license of every voice in the collection and of the data it was trained on. The ones offered are CC0, Public Domain or Apache-2.0. The rest are listed with the reason they are not.
    
				
    177voices reviewed
    11offered
    166left out, with reasons
    
				
    Read the license guide 
    
			
    
			
    
				
    VoiceLicenseStatus
    
				
    en_US joeCC0Offered
    
				
    en_US bryceCC0Offered
    
				
    en_US kristinPublic DomainOffered
    
				
    en_GB (dictionary)GPL dataNot offered
    
				
    Non-commercial setCC BY-NCNot offered
    
			
    
		
    
	
    

	
	
    
		
    
			
    
				 Part of the BoxLang ecosystem
				
    Built for BoxLang, with BoxLang.
    
			
    
			
    
				
    BoxLang
    BoxLang The dynamic JVM language this module is built for.    
				
    BoxLang AI
    BoxLang AI Generate scripts and narration text, then render them with Audio.    
				
    BoxLang+ Support, modules and the features that run a fleet.    
				
    ColdBox
    ColdBox Serve generated audio from the apps you build on ColdBox.    
				
    CommandBox
    CommandBox Install the module and its command line from the package manager.    
				
    bxSites
    bxSites The static site generator that builds these docs.    
				
    BxPlaywright
    BxPlaywright Browser automation and testing for BoxLang.    
				
    BxLens
    BxLens The debug bar and ops console for BoxLang apps.    
				
    BxAgents
    BxAgents Build AI agents by convention, powered by BoxLang AI.    
			
    
		
    
	
    

	
	
    
		
    
			
    
				
    
					 Consulting and support
					
    Need audio in production? Talk to the people who build BoxLang.
    
					
    Ortus Solutions offers professional support, architecture reviews and custom development for BoxLang, including audio pipelines, narration and video workflows.
    
					
    
						Talk to Ortus 
						See BoxLang+ plans
						 consulting@ortussolutions.com
					
    
				
    
				
    
					
    Priority supportAnswers from the team that wrote the runtime.
    
					
    Custom developmentVoices, pipelines and integrations built to your brief.
    
					
    Training and reviewGet your team productive and your design checked.
    
				
    
			
    
		
    
	
    

	
	
    
		
    
			
    
				 Two minutes to your first sound
				
    Install it. Run one line. Hear it.
    
				
    Install the module and render your first beat from a script.
    
				
    
					Get started 
					Try every feature