For anyone trying to get this to work

[clonzeh]

Follow the install steps.

This fix was posted in another bug report, i'm just putting it here and combining all the findings for you.

Inside the folder:
C:\Users\%user%\Documents\YourProject\Library\PackageCache\com.github.asus4.tflite@df752d930b\Runtime
open the file called Interpreter.cs I found this file by using visual studio's Find in Files and searching for: SetInputTensorData and then rightclicking the Interperter.cs tab and copying the file location

Find and edit these methods and change them to match the following:
public void SetInputTensorData(int inputTensorIndex, Array inputTensorData) { GCHandle tensorDataHandle = GCHandle.Alloc(inputTensorData, GCHandleType.Pinned); //if (!inputDataHandles.TryGetValue(inputTensorIndex, out GCHandle tensorDataHandle)) //{ // tensorDataHandle = GCHandle.Alloc(inputTensorData, GCHandleType.Pinned); // inputDataHandles.Add(inputTensorIndex, tensorDataHandle); //} IntPtr tensorDataPtr = tensorDataHandle.AddrOfPinnedObject(); TfLiteTensor tensor = TfLiteInterpreterGetInputTensor(interpreter, inputTensorIndex); ThrowIfError(TfLiteTensorCopyFromBuffer(tensor, tensorDataPtr, Buffer.ByteLength(inputTensorData))); tensorDataHandle.Free(); }
AND
public void GetOutputTensorData(int outputTensorIndex, Array outputTensorData) { GCHandle tensorDataHandle = GCHandle.Alloc(outputTensorData, GCHandleType.Pinned); //if (!outputDataHandles.TryGetValue(outputTensorIndex, out GCHandle tensorDataHandle)) //{ // tensorDataHandle = GCHandle.Alloc(outputTensorData, GCHandleType.Pinned); // outputDataHandles.Add(outputTensorIndex, tensorDataHandle); //} IntPtr tensorDataPtr = tensorDataHandle.AddrOfPinnedObject(); TfLiteTensor tensor = TfLiteInterpreterGetOutputTensor(interpreter, outputTensorIndex); ThrowIfError(TfLiteTensorCopyToBuffer(tensor, tensorDataPtr, Buffer.ByteLength(outputTensorData))); tensorDataHandle.Free(); }

Now create a gameobject to hold the TextToSpeech.cs script.
Add an AudioSource component to the object... assign it to the script.

Assign the other variables to the script from the streamingassets folder:
https://i.imgur.com/AFdnTPs.png

Note: You might need to copy and paste the speech_mapper file from your StreamingAssets folder into your project Assets folder.

Now make your own script and put it on the same gameobject which run:
GetComponent<TextToSpeech>().Speak("hello this is a test");