Native speaker 2.
Romero-Rivas C, Martin C, Costa A
CC BY 4.0
<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4373278/bin/Audio6.WAV">Audio 6</a> from <cite style="font-style:normal">Romero-Rivas C, Martin C, Costa A (2015). "<a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4373278">Processing changes when listening to foreign-accented speech</a>". <i>Frontiers in Human Neuroscience</i>. <a href="https://en.wikipedia.org/wiki/Digital_object_identifier" class="extiw" title="w:Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.3389/fnhum.2015.00167">10.3389/fnhum.2015.00167</a>. <a href="https://en.wikipedia.org/wiki/PMID" class="extiw" title="w:PMID">PMID</a> <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pubmed/25859209">25859209</a>. <a href="https://en.wikipedia.org/wiki/PubMed_Central" class="extiw" title="w:PubMed Central">PMC</a>: <a rel="nofollow" class="external text" href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4373278">4373278</a>.</cite>