9.5 Neural network-based accent classification results

Results

The following are some example outputs from the neural network from various test speakers. The output displaysrelative strengths of different types of accents prevalent in a particular subject. All test inputs were not used in the trainingmatrix. Overall, approximately 20 tests were conducted with about an 80% success rate. Those that failed tended to with good reason(either inadequate recording quality, or speakers who did not provide accurate information about what their accent is comprisedof – a common issue with subjects who have lived in multiple places).

The charts below show accents in the following order: Northern US, Texan US, Russian, Farsi, and Mandarin

Test 1: chinese subject

Here our network has successfully picked out the accent of our subject. Secondarily, the network picked up on a slight Texan accent, possibly showing the influence of location on the subject (The sample was recorded in Texas).

Test 2: iranian subject

Again our network has successfully picked out the accent of our subject. Once again, this sample was recorded in Texas, which could account for the secondary influence of a Texan accent in the subject.

Test 3: chinese subject

Once again, the network successfully picks up on the subjects primary accent as well as influence of a Texan accent (this sample was also recorded in Texas).

Test 4: chinese subject

A successful test showing little or no influence from other accents in the network.

Test 5: american subject (hybrid of regions)

Results from a subject who has lived all over -- mainly in Texas, who's accent appears to sound more Northern (which seems relatively true if one listens to the source recording).

Test 6: russian subject

Successful test of a Russian subject with strong influences of a Northern US accent.

Test 7: russian subject

Another successful test of a Russian subject with strong influences of a Northern US accent.

Test 8: cantonese subject

Successful region-based test of a Cantonese subject who has been living in the US.

Test 1: korean subject

An interesting example of throwing an accent at the network that doesn't fit into any of the categories.